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## 1. Classe : dcat:CatalogRecord
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| **RDF Class:** | [dcat:CatalogRecord](https://www.w3.org/TR/vocab-dcat-2/#Class:Catalog_Record) |
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|--------------------|:--------------------|
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| Constraint | *Mandatory* |
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| Definition | A record in a catalog, describing the registration of a single [dcat:Resource](https://www.w3.org/TR/vocab-dcat-2/#Class:Resource). |
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| Usage note | *It exists for catalogs where a distinction is made between metadata about a dataset or service and metadata about the entry in the catalog about the dataset or service. For example, the publication date property of the dataset reflects the date when the information was originally made available by the publishing agency, while the publication date of the catalog record is the date when the dataset was added to the catalog.* |
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| See also | *[ Classe : dcat:Dataset ](https://www.w3.org/TR/vocab-dcat-2/#Class:Dataset)* |
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### 1.1 Propriété : foaf:primaryTopic
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| **RDF Property:** | [foaf:primaryTopic](http://xmlns.com/foaf/0.1/#term_primaryTopic) |
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|--------------------|:--------------------|
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| Constraint | *Mandatory* |
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| Definition | A link to the Dataset, Data service or Catalog described in the record.|
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| Range | [dcat:Resource](https://www.w3.org/TR/vocab-dcat-2/#Class:Resource) |
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| Usage note | [foaf:primaryTopic](http://xmlns.com/foaf/0.1/#term_primaryTopic) property is functional: each catalog record can have at most one primary topic (cardinality =1)i.e. describes one dataset or service. |
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### 1.2 Propriété : dct:modified
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| **RDF Property:** | [dct:modified](http://purl.org/dc/terms/modified) |
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|--------------------|:--------------------|
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| Constraint | *Mandatory* |
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| Definition | Most recent date on which the catalog entry was changed, updated or modified. |
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) encoded using the relevant ISO 8601 Date and Time compliant string [DATETIME](https://www.w3.org/TR/NOTE-datetime) and typed using the appropriate XML Schema datatype [XMLSCHEMA11-2](https://www.w3.org/TR/xmlschema11-2/) ([xsd:gYear](https://www.w3.org/TR/xmlschema11-2/#gYear), [xsd:gYearMonth](https://www.w3.org/TR/xmlschema11-2/#gYearMonth), [xsd:date](https://www.w3.org/TR/xmlschema11-2/#date), or [xsd:dateTime](https://www.w3.org/TR/xmlschema11-2/#dateTime)). |
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| Usage note | [foaf:primaryTopic](http://xmlns.com/foaf/0.1/#term_primaryTopic) property is functional: each catalog record can have at most one primary topic i.e. describes one dataset or service. |
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### 1.3 Propriété : dct:conformsTo (application profile)
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| **RDF Property:** | [dct:conformsTo](http://purl.org/dc/terms/conformsTo) |
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|--------------------|:--------------------|
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| Constraint | *Recommended* |
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| Definition | An established standard to which the described resource conforms. |
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| Range | [dct:Standard](http://purl.org/dc/terms/Standard) (A basis for comparison; a reference point against which other things can be evaluated.) |
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| Usage note | This property should be used to indicate the model, schema, ontology, view or profile that the catalog record metadata conforms to. |
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### 1.4 Propriété : dct:identifier
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| **RDF Property:** | [dct:identifier](https://www.w3.org/TR/vocab-dcat-2/#Property:resource_identifier) |
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|--------------------|:--------------------|
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| Constraint | *Recommended* |
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| Definition | A unique identifier for the Catalogue Record. |
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) |
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| Usage note | The identifier might be used as part of the URI of the item, but still having it represented explicitly is useful. |
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### 1.5 Propriété : dct:created
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| **RDF Property:** | [dct:created](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/created) |
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|--------------------|:--------------------|
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| Constraint | *Optional* |
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| Definition | Date of creation of the Catalog Record. |
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) typed as [xsd:date](https://www.w3.org/TR/xmlschema11-2/#date) or [xsd:dateTime](https://www.w3.org/TR/xmlschema11-2/#dateTime)|
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| Usage note | This property contains the date on which the Catalogue Record has been first created. |
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### 1.6 Propriété : dct:language
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| **RDF Property:** | [dct:language](https://www.w3.org/TR/vocab-dcat-2/#Property:resource_language) |
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|--------------------|:--------------------|
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| Constraint | *Optional* |
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| Definition | The language of the resource. |
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| Range | [dct:LinguisticSystem](http://purl.org/dc/terms/LinguisticSystem) |
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| Usage note | This property refers to a language used in the textual metadata describing titles, descriptions, etc. of the Catalog Record. This property can be repeated if the metadata is provided in multiple languages. |
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### 1.7 Contexte et exemple en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [dcat:CatalogRecord](https://www.w3.org/TR/vocab-dcat-2/#Class:Catalog_Record).
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> **Note** : contexte Data Terra à compléter (https://docs.google.com/presentation/d/1fV68l9r9JjEJ0b1mwhQrKhxqa-BdNChxd58p3aDDu5g/edit#slide=id.g1ad07726d6f_2_61).
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Dans le contexte du catalogue fédéré la classe [dcat:CatalogRecord](https://www.w3.org/TR/vocab-dcat-2/#Class:Catalog_Record) est celle qui permets le lien de premier niveau au moment d'une recherche (à partir d'une IHM ou d'une API) dont le but est la découverte de jeux de données.
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> **Note** : exemple à revoir !!!
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```turtle
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@prefix dct: <http://purl.org/dc/terms/> .
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@prefix dcat: <http://www.w3.org/ns/dcat#> .
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@prefix foaf <http://xmlns.com/foaf/0.1/> .
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@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
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@prefix : <http://example-dataterra.org/> .
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:data_terra_catalog_record a dcat:CatalogRecord ;
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foaf:primaryTopic :data_terra_dataset ;
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dct:modified "2020-03-25"^^xsd:date ;
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dct:identifier "af4c4fd6-0485-45c8-b6bc-8a8ed12aa3eb"^^xsd:string .
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```
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## 2. Classe : dcat:Dataset
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## 1. Classe : dcat:Dataset
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| **RDF Class:** | [dcat:Dataset](https://www.w3.org/TR/vocab-dcat-2/#Class:Dataset) |
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|--------------------|:--------------------|
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... | ... | @@ -90,9 +7,7 @@ Dans le contexte du catalogue fédéré la classe [dcat:CatalogRecord](https://w |
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| Sub-class of | [dcat:Resource](https://www.w3.org/TR/vocab-dcat-2/#Class:Resource) |
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| Usage note | This class describes the conceptual dataset. One or more representations might be available, with differing schematic layouts and formats or serializations. |
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### 2.x Contexte et exemple en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [dcat:Dataset](https://www.w3.org/TR/vocab-dcat-2/#Class:Dataset).
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> **Note** : à voir si c'est le bon endroit pour cet exemple simple de dcat:Dataset. Manque développer plus le contexte Data Terra.
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### 1.1 Contexte et exemple simplifié en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [dcat:Dataset](https://www.w3.org/TR/vocab-dcat-2/#Class:Dataset).
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Exemple simplifié d'instanciation d'une entité *dcat:Dataset* dans le contexte Data Terra. Le niveau de granularité présent pour cet exemple équivaut à celui d'une collection de données (mettant en place des relations avec 2 autres datasets). A noter sur cet exemple simplifié, que la nature de la collection de données (données observés in-situ, observés ex-situ, données dérivés , etc.) n'est pas décrite explicitement, ce qui permet de voir que les classes et propriétés du cœur du profil d'application permettent de décrire de façon cohérente différentes collections de données indépendamment de sa nature.
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... | ... | @@ -126,7 +41,7 @@ Pour aller plus loin dans des exemples d'instanciation de la classe *dcat:Datase |
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[ADCP Current Continuous Profiler]:https://gitlab.in2p3.fr/gaia-data/wp3-services/vocabulaires/dataterra_ap/dataterra_geodcatap/-/blob/main/examples/adcp_current_continuous_profiler/latest/exemple_adcp_current_continuous_profiler.ttl
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### 2.1 Propriété : dct:title
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### 1.2 Propriété : dct:title
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| **RDF Property:** | [dct:title](http://purl.org/dc/terms/title) |
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|-------------------|:--------------------|
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... | ... | @@ -134,7 +49,7 @@ Pour aller plus loin dans des exemples d'instanciation de la classe *dcat:Datase |
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| Definition | A name given to the resource. |
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) |
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### 2.2 Propriété : dct:description
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### 1.3 Propriété : dct:description
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| **RDF Property:** | [dct:description](http://purl.org/dc/terms/description) |
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|-------------------|:--------------------|
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... | ... | @@ -142,7 +57,7 @@ Pour aller plus loin dans des exemples d'instanciation de la classe *dcat:Datase |
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| Definition | A free-text account of the item.|
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) |
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### 2.3 Propriété : dcat:contactPoint
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### 1.4 Propriété : dcat:contactPoint
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| **RDF Property:** | [dcat:contactPoint](https://www.w3.org/TR/vocab-dcat-2/#Property:resource_contact_point) |
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|-------------------|:--------------------|
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... | ... | @@ -151,7 +66,7 @@ Pour aller plus loin dans des exemples d'instanciation de la classe *dcat:Datase |
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| Range | [vcard:Kind](http://www.w3.org/TR/vcard-rdf/#Kind) |
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| Usage note | Use of vCard is recommended [VCARD-RDF](https://www.w3.org/TR/vcard-rdf/). |
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### 2.4 Propriété : dcat:distribution
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### 1.5 Propriété : dcat:distribution
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| **RDF Property:** | [dcat:distribution](https://www.w3.org/TR/vocab-dcat-2/#Property:dataset_distribution) |
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|-------------------|:--------------------|
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... | ... | @@ -160,7 +75,7 @@ Pour aller plus loin dans des exemples d'instanciation de la classe *dcat:Datase |
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| Sub-property of | [dct:relation](http://purl.org/dc/terms/relation) |
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| Range | [dcat:Distribution](https://www.w3.org/TR/vocab-dcat-2/#Class:Distribution) |
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### 2.5 Propriété : dct:spatial (spatial/geographical coverage)
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### 1.6 Propriété : dct:spatial (spatial/geographical coverage)
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| **RDF Property:** | [dct:spatial](http://purl.org/dc/terms/spatial) |
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... | ... | @@ -180,10 +95,10 @@ La propriété *dct:spatial* peut être instanciée par un objet Bounding box, . |
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:dataset_spatial_bbox a dct:Location ;
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dcat:bbox "<http://www.opengis.net/def/crs/OGC/1.3/CRS84> POLYGON(75.49 39.52,88.35 39.52,88.35 33.95,75.49 33.95,75.49 39.52)"^^gsp:wktLiteral . # This property refers to the geographic bounding box of a resource.
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```
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D'autres objets tels que des géométries (polygones, points) et des concepts appartenant à des référentiels géographiques peuvent instancier cette propriété *dct:spatial*. Pour plus de détail sur ces objets, des exemples sont disponibles dans [3. Classe : dct:Location](https://gitlab.in2p3.fr/gaia-data/wp3-services/vocabulaires/dataterra_ap/guidelines_profil_application/-/wikis/Specification#3-classe-dctlocation).
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D'autres objets tels que des géométries (polygones, points) et des concepts appartenant à des référentiels géographiques peuvent instancier cette propriété *dct:spatial*. Pour plus de détail sur ces objets, des exemples sont disponibles dans [5. Classe : dct:Location](https://gitlab.in2p3.fr/gaia-data/wp3-services/vocabulaires/dataterra_ap/guidelines_profil_application/-/wikis/Specification#5-classe-dctlocation).
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### 2.6 Propriété : dct:temporal (temporal coverage)
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### 1.7 Propriété : dct:temporal (temporal coverage)
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| **RDF Property:** | [dct:temporal](http://purl.org/dc/terms/temporal) |
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|-------------------|:--------------------|
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... | ... | @@ -192,7 +107,7 @@ D'autres objets tels que des géométries (polygones, points) et des concepts ap |
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| Range | [dct:PeriodOfTime](http://purl.org/dc/terms/PeriodOfTime) (An interval of time that is named or defined by its start and end dates). |
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| Usage note | The temporal coverage of a dataset may be encoded as an instance of [dct:PeriodOfTime](http://purl.org/dc/terms/PeriodOfTime), or may be indicated using a URI reference (link) to a resource describing a time period or interval. |
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### 2.7 Propriété : dcat:keyword
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### 1.8 Propriété : dcat:keyword
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| **RDF Property:** | [dcat:keyword](https://www.w3.org/TR/vocab-dcat-2/#Property:resource_keyword) |
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|-------------------|:--------------------|
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... | ... | @@ -200,7 +115,7 @@ D'autres objets tels que des géométries (polygones, points) et des concepts ap |
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| Definition | A keyword or tag describing the resource. |
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) |
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### 2.8 Propriété : dcat:theme (theme / category)
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### 1.9 Propriété : dcat:theme (theme / category)
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| **RDF Property:** | [dcat:theme](https://www.w3.org/TR/vocab-dcat-2/#Property:resource_theme) |
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... | ... | @@ -221,8 +136,6 @@ Pour instancier chacun de ces quatre groupes *dcat:theme*, nous préconisons de' |
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[colonne vertébrale terminologique Data Terra]:https://terra-vocabulary.org/ncl/FAIR-Incubator
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> **Note** : tableau à compléter avec l'état des lieux
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| Pôle / IR | Vocabulaires | Description |
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|:---|:---|:---|
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| Odatis |[BODC collection -OD1 Odatis](http://vocab.nerc.ac.uk/collection/OD1/current/) <br/> [Thésaurus catalogue ODATIS](https://www.odatis-ocean.fr/donnees-et-services/acces-aux-donnees/thesaurus-catalogue-odatis) | *ODATIS aggregation parameters and Essential Variable names* <br/> *Vocabularies for variables, data centers, dataset type and themes*|
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... | ... | @@ -248,7 +161,7 @@ Les variables associés à ce dataset exemple sont respectivement la [pression d |
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Du côté des capteurs, ceux concernés par ce dataset sont de type [calibrateur de particules aérosols/nuages](https://terra-vocabulary.org/ncl/FAIR-Incubator/earthsciencesensors/c_bbdccf61) qui est hébergé par une plateforme du type [ballons](https://terra-vocabulary.org/ncl/FAIR-Incubator/earthscienceplatforms/c_50576757).
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#### 2.8.1 Exemple en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la propriété [dcat:theme](http://www.w3.org/ns/dcat#theme).
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#### 1.9.1 Exemple en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la propriété [dcat:theme](http://www.w3.org/ns/dcat#theme).
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```turtle
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@prefix dct: <http://purl.org/dc/terms/> .
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... | ... | @@ -269,7 +182,7 @@ Pour aller plus loin dans cet exemple, voici le lien vers le code source de fich |
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[mesure de particules atmosphériques ]:https://gitlab.in2p3.fr/gaia-data/wp3-services/vocabulaires/dataterra_ap/dataterra_geodcatap/-/blob/main/examples/LOAC_balloon-borne_experiments/latest/exemple_LOAC_balloon-borne_experiments_atmospheric_particles.ttl
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### 2.9 Propriété : dct:publisher
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### 1.10 Propriété : dct:publisher
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| **RDF Property:** | [dct:publisher](http://purl.org/dc/terms/publisher) |
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|-------------------|:--------------------|
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... | ... | @@ -278,7 +191,7 @@ Pour aller plus loin dans cet exemple, voici le lien vers le code source de fich |
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| Range | (includes) [foaf:Agent](http://xmlns.com/foaf/0.1/Agent) |
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| Usage note | Resources of type [foaf:Agent](http://xmlns.com/foaf/0.1/Agent) are recommended as values for this property. |
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### 2.10 Propriété : dct:accessRights
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### 1.11 Propriété : dct:accessRights
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| **RDF Property:** | [dct:accessRights](http://purl.org/dc/terms/accessRights) |
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|-------------------|:--------------------|
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... | ... | @@ -289,7 +202,23 @@ Pour aller plus loin dans cet exemple, voici le lien vers le code source de fich |
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| See also | [dct:rights](https://www.w3.org/TR/vocab-dcat-2/#Property:resource_rights) for copyrights statements. [License and rights statements](https://www.w3.org/TR/vocab-dcat-2/#license-rights) describing patterns for linking to suitable licenses and rights expressions. |
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| Domain value | [EUV-AR](http://publications.europa.eu/resource/authority/access-right), [INSPIRE-LPA](http://inspire.ec.europa.eu/metadata-codelist/LimitationsOnPublicAccess) |
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### 2.11 Propriété : dct:identifier
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### 1.12 Résolution spatiale. Propriétés : dcat:spatialResolutionInMeters et geodcat:spatialResolutionAsAngularDistance
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| **RDF Property:** | [dcat:spatialResolutionInMeters](https://www.w3.org/TR/vocab-dcat-2/#Property:dataset_spatial_resolution) |
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|-------------------|:--------------------|
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| Constraint | *Recommended* |
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| Definition | Minimum spatial separation resolvable in a dataset, measured in meters. |
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| Range | [xsd:decimal](https://www.w3.org/TR/xmlschema11-2/#decimal) |
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| Usage note | If the dataset is an image or grid this should correspond to the spacing of items. For other kinds of spatial datasets, this property will usually indicate the smallest distance between items in the dataset. The range of this property is a decimal number representing a length in meters. This is intended to provide a summary indication of the spatial resolution of the data as a single number. More complex descriptions of various aspects of spatial precision, accuracy, resolution and other statistics can be provided using the Data Quality Vocabulary [VOCAB-DQV](https://www.w3.org/TR/vocab-dqv/). |
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| **RDF Property:** | [geodcat:spatialResolutionAsAngularDistance](https://semiceu.github.io/GeoDCAT-AP/releases/2.0.0/#metric-spatial-resolution-as-angular-distance) |
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|-------------------|:--------------------|
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| Constraint | *Recommended* |
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| Definition | Spatial resolution expressed as angular distance, measured in decimal degrees. |
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| Range | [dqv:Metric](https://www.w3.org/TR/vocab-dqv/#dqv:Metric) |
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|Usage note | Spatial resolution expressed as angular distance, by using a decimal degree as unit. |
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### 1.13 Propriété : dct:identifier
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| **RDF Property:** | [dct:identifier](http://purl.org/dc/terms/identifier) |
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|-------------------|:--------------------|
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... | ... | @@ -298,7 +227,7 @@ Pour aller plus loin dans cet exemple, voici le lien vers le code source de fich |
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) |
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| Usage note | The identifier might be used as part of the URI of the item, but still having it represented explicitly is useful. |
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### 2.12 Propriété : dcat:qualifiedRelation
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### 1.14 Propriété : dcat:qualifiedRelation
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| **RDF Property:** | [dcat:qualifiedRelation](https://www.w3.org/TR/vocab-dcat-2/#Property:resource_qualified_relation) |
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|-------------------|:--------------------|
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... | ... | @@ -309,225 +238,212 @@ Pour aller plus loin dans cet exemple, voici le lien vers le code source de fich |
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| Range | [dcat:Relationship](https://www.w3.org/TR/vocab-dcat-2/#Class:Relationship) |
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| Usage note | Used to link to another resource where the nature of the relationship is known but does not match one of the standard [DCTERMS](https://www.w3.org/TR/vocab-dcat-2/#bib-dcterms) properties ([dct:hasPart](http://purl.org/dc/terms/hasPart), [dct:isPartOf](http://purl.org/dc/terms/isPartOf), [dct:conformsTo](http://purl.org/dc/terms/conformsTo), [dct:isFormatOf](http://purl.org/dc/terms/isFormatOf), [dct:hasFormat](http://purl.org/dc/terms/hasFormat), [dct:isVersionOf](http://purl.org/dc/terms/isVersionOf), [dct:hasVersion](http://purl.org/dc/terms/hasVersion), [dct:replaces](http://purl.org/dc/terms/replaces), [dct:isReplacedBy](http://purl.org/dc/terms/isReplacedBy), [dct:references](http://purl.org/dc/terms/references), [dct:isReferencedBy](http://purl.org/dc/terms/isReferencedBy), [dct:requires](http://purl.org/dc/terms/requires), [dct:isRequiredBy](http://purl.org/dc/terms/isRequiredBy)) or [PROV-O](https://www.w3.org/TR/vocab-dcat-3/#bib-prov-o) properties ([prov:wasDerivedFrom](http://www.w3.org/TR/prov-o/#wasDerivedFrom), [prov:wasInfluencedBy](https://www.w3.org/TR/prov-o/#wasInfluencedBy), [prov:wasQuotedFrom](http://www.w3.org/TR/prov-o/#wasQuotedFrom), [prov:wasRevisionOf](https://www.w3.org/TR/prov-o/#wasRevisionOf), [prov:hadPrimarySource](https://www.w3.org/TR/prov-o/#hadPrimarySource), [prov:alternateOf](https://www.w3.org/TR/prov-o/#alternateOf), [prov:specializationOf](https://www.w3.org/TR/prov-o/#specializationOf)). |
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La propriété *dcat:qualifiedRelation* est un élément clé pour l'interopérabilité car elle permets de mettre en relation les différentes ressources existantes pour un même *dcat:Dataset*. Cette propriété est préconisé pour lier la description d'une donnée à d'autres données : fiche de métadonnées source, différents types de publications, documents, etc., en utilisant leur URI et le rôle de ces ressources par rapport au données en question. La désignation du rôle est, la plupart du temps, décrite dans les exemples travaillés par le vocabulaire contrôlé [IANA-RELATION](https://www.iana.org/assignments/relation).Un exemple détaillé est disponible dans [5. Classe : dcat:Relationship](https://gitlab.in2p3.fr/gaia-data/wp3-services/vocabulaires/dataterra_ap/guidelines_profil_application/-/wikis/Specification#5-classe-dcatrelationship).
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### 2.13 Résolution spatiale. Propriétés : dcat:spatialResolutionInMeters et geodcat:spatialResolutionAsAngularDistance
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| **RDF Property:** | [dcat:spatialResolutionInMeters](https://www.w3.org/TR/vocab-dcat-2/#Property:dataset_spatial_resolution) |
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|-------------------|:--------------------|
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| Constraint | *Recommended* |
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| Definition | Minimum spatial separation resolvable in a dataset, measured in meters. |
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| Range | [xsd:decimal](https://www.w3.org/TR/xmlschema11-2/#decimal) |
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| Usage note | If the dataset is an image or grid this should correspond to the spacing of items. For other kinds of spatial datasets, this property will usually indicate the smallest distance between items in the dataset. The range of this property is a decimal number representing a length in meters. This is intended to provide a summary indication of the spatial resolution of the data as a single number. More complex descriptions of various aspects of spatial precision, accuracy, resolution and other statistics can be provided using the Data Quality Vocabulary [VOCAB-DQV](https://www.w3.org/TR/vocab-dqv/). |
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La propriété *dcat:qualifiedRelation* est un élément clé pour l'interopérabilité car elle permets de mettre en relation les différentes ressources existantes pour un même *dcat:Dataset*. Cette propriété est préconisé pour lier la description d'une donnée à d'autres données : fiche de métadonnées source, différents types de publications, documents, etc., en utilisant leur URI et le rôle de ces ressources par rapport au données en question. La désignation du rôle est, la plupart du temps, décrite dans les exemples travaillés par le vocabulaire contrôlé [IANA-RELATION](https://www.iana.org/assignments/relation).Un exemple détaillé est disponible dans [7. Classe : dcat:Relationship](https://gitlab.in2p3.fr/gaia-data/wp3-services/vocabulaires/dataterra_ap/guidelines_profil_application/-/wikis/Specification#7-classe-dcatrelationship).
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| **RDF Property:** | [geodcat:spatialResolutionAsAngularDistance](https://semiceu.github.io/GeoDCAT-AP/releases/2.0.0/#metric-spatial-resolution-as-angular-distance) |
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|-------------------|:--------------------|
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| Constraint | *Recommended* |
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| Definition | Spatial resolution expressed as angular distance, measured in decimal degrees. |
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| Range | [dqv:Metric](https://www.w3.org/TR/vocab-dqv/#dqv:Metric) |
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|Usage note | Spatial resolution expressed as angular distance, by using a decimal degree as unit. |
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### 2.14 Propriétés optionnelles pour dcat:Dataset
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### 1.15 Propriétés optionnelles pour dcat:Dataset
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> **Note** : il manque lister les propriétés de dcat:Dataset Optionnelles (O) : dct:conformsTo (ref. system), dcat:temporalResolution, dct:created, dct:modified, dct:creator, foaf:page, dcat:landingPage, dct:language, dct:provenance, dct:type, owl:versionInfo, geodcat:distributor, geodcat:principalInvestigator, geodcat:processor, dct:issued.
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## 3. Classe : dct:Location
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## 2. Classe : dcat:Distribution
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| **RDF Class:** | [dct:Location](http://dublincore.org/documents/dcmi-terms/#terms-Location) |
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| **RDF Class:** | [dcat:Distribution](https://www.w3.org/TR/vocab-dcat-2/#Class:Distribution) |
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|--------------------|:--------------------|
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| Constraint | *Mandatory* |
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| Definition | A spatial region or named place. |
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|Usage note | It can be represented using a controlled vocabulary or with geographic coordinates. <br/>For an extensive geometry (i.e., a set of coordinates denoting the vertices of the relevant geographic area), the property [locn:geometry](https://www.w3.org/TR/vocab-dcat-2/#Property:location_geometry) should be used. <br/> For a geographic bounding box delimiting a spatial area the property [dcat:bbox](https://www.w3.org/TR/vocab-dcat-2/#Property:location_bbox) should be used. <br/> For the geographic center of a spatial area, or another characteristic point, the property [dcat:centroid](https://www.w3.org/TR/vocab-dcat-2/#Property:location_centroid) should be used. |
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| Definition | A specific representation of a dataset. A dataset might be available in multiple serializations that may differ in various ways, including natural language, media-type or format, schematic organization, temporal and spatial resolution, level of detail or profiles (which might specify any or all of the above). |
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| Usage note | This represents a general availability of a dataset. It implies no information about the actual access method of the data, i.e. whether by direct download, API, or through a Web page. The use of [dcat:downloadURL](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_download_url) property indicates directly downloadable distributions. |
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### 3.1 Propriété : dcat:bbox
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### 2.1 Propriété : dct:description
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| **RDF Property:** | [dcat:bbox](https://www.w3.org/TR/vocab-dcat-2/#Property:location_bbox) |
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| **RDF Property:** | [dct:description](http://purl.org/dc/terms/description) |
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|-------------------|:--------------------|
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| Constraint | *Mandatory* |
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| Definition | The geographic bounding box of a resource. |
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| Range | [rdfs:Literal](https://www.w3.org/TR/rdf-schema/#ch_literal) |
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| Usage note | The range of this property is intentionally generic, with the purpose of allowing different geometry encodings. E.g., the geometry could be encoded as WKT ([geosparql:asWKT](http://www.opengis.net/ont/geosparql#asWKT) [GeoSPARQL](http://www.opengeospatial.org/standards/geosparql)).|
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| Definition | A free-text account of the distribution. |
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) |
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Un exemple détaillé d'une localisation définie par un bounding box est disponible à partir de la description [2.5 Propriété : dct:spatial (spatial/geographical coverage)](https://gitlab.in2p3.fr/gaia-data/wp3-services/vocabulaires/dataterra_ap/guidelines_profil_application/-/wikis/Specification#25-propri%C3%A9t%C3%A9-dctspatial-spatialgeographical-coverage) au niveau de la classe *dcat:Dataset*.
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### 3.2 Propriété : locn:geometry
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### 2.2 Propriété : dcat:accessURL
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| **RDF Property:** | [locn:geometry](https://www.w3.org/ns/locn#locn:geometry) |
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| **RDF Property:** | [dcat:accessURL](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_access_url) |
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|-------------------|:--------------------|
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| Constraint | *Optional* |
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| Definition | Associates any resource with the corresponding geometry. |
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| Range | [rdfs:Literal](https://www.w3.org/TR/rdf-schema/#ch_literal) |
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| Usage note | The range of this property is intentionally generic, with the purpose of allowing different geometry encodings. E.g., the geometry could be encoded as WKT ([geosparql:asWKT](http://www.opengis.net/ont/geosparql#asWKT) [GeoSPARQL](http://www.opengeospatial.org/standards/geosparql)).|
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| Constraint | *Mandatory* |
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| Definition | A URL of the resource that gives access to a distribution of the dataset. E.g. landing page, feed, SPARQL endpoint. |
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| Range | [rdfs:Resource](http://www.w3.org/2000/01/rdf-schema#Resource) |
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| Usage note | [dcat:accessURL](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_access_url) should be used for the URL of a service or location that can provide access to this distribution, typically through a Web form, query or API call. [dcat:downloadURL](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_download_url) is preferred for direct links to downloadable resources.If the distribution(s) are accessible only through a landing page (i.e. direct download URLs are not known), then the landing page URL associated with the [dcat:Dataset](https://www.w3.org/TR/vocab-dcat-2/#Class:Dataset) should be duplicated as access URL on a distribution. |
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### 3.3 Propriété : dct:identifier
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### 2.3 Propriété : dct:license
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| **RDF Property:** | [dct:identifier](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/identifier) |
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| **RDF Property:** | [dct:license](http://purl.org/dc/terms/license) |
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|-------------------|:--------------------|
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| Constraint | *Optional* |
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| Definition | An unambiguous reference to the resource within a given context. |
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| Range | [rdfs:Literal](https://www.w3.org/TR/rdf-schema/#ch_literal) |
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| Usage note | This property contains the geographic identifier for the Location, e.g., the URI or other unique identifier in the context of the relevant gazetteer. |
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| Constraint | *Mandatory* |
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| Definition | A legal document under which the distribution is made available. |
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| Sub-property of | [dct:rights](http://purl.org/dc/terms/rights) |
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| Range | [dct:LicenseDocument](http://purl.org/dc/terms/LicenseDocument) |
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| Usage note | Information about licenses and rights should be provided on the level of Distribution. Information about licenses and rights may be provided for a Dataset in addition to but not instead of the information provided for the Distributions of that Dataset. Providing license or rights information for a Dataset that is different from information provided for a Distribution of that Dataset should be avoided as this can create legal conflicts. |
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### 3.x Contexte et exemple en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [dct:Location](http://dublincore.org/documents/dcmi-terms/#terms-Location).
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### 2.4 Propriété : dct:format
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La classe *dct:Location* peut également être instanciée en utilisant une géométrie de type POINT (coordonnées de points), et/ou pointer vers les URI de nom de localisation proposés dans un service gazetteer comme [GeoNames](https://www.geonames.org). Ci-dessous un exemple d'instanciation en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de ce type de localisation extrait du jeux de données concernant la [mesure de particules atmosphériques].
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| **RDF Property:** | [dct:format](http://purl.org/dc/terms/format) |
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|-------------------|:--------------------|
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| Constraint | *Recommended* |
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| Definition | The file format of the distribution. |
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| Range | [dct:MediaTypeOrExtent](http://purl.org/dc/terms/MediaTypeOrExtent) |
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| Domain value | [IANA-MEDIA-TYPES](https://www.iana.org/assignments/media-types/media-types.xhtml), [EUV-FT](http://publications.europa.eu/resource/authority/file-type) |
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```turtle
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@prefix dct: <http://purl.org/dc/terms/> .
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@prefix gsp: <http://www.opengis.net/ont/geosparql#> .
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@prefix locn: <http://www.w3.org/ns/locn#> .
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@prefix : <http://example-dataterra.org/> .
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### 2.5 Propriété : dcat:downloadURL
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:dataset_spatial_points a dct:Location ;
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locn:geometry "<http://www.opengis.net/def/crs/OGC/1.3/CRS84> POINT(-81.37 48.57 0.0)"^^gsp:wktLiteral , "POINT(0.1 43.7 0.0)"^^gsp:wktLiteral , "POINT(-21.9 64.1 0.0)"^^gsp:wktLiteral , "POINT(21.1 67.9 0.0)"^^gsp:wktLiteral , "POINT(133.9 -23.8 0.0)"^^gsp:wktLiteral ] ; # This property refers to the geographic point of a resource, "POINT(lon lat elevation)"^^gsp:wktLiteral .
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:dataset_spatial_gazetteer a dct:Location ;
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dct:identifier <https://www.geonames.org/6166739/>, <https://www.geonames.org/3038394/>, <https://www.geonames.org/2629691/>, <https://www.geonames.org/605155/>, <https://www.geonames.org/2077895/> . # Spatial property by geographical identifier from GeoNames Gazetteer service.
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```
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| **RDF Property:** | [dcat:downloadURL](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_download_url) |
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|-------------------|:--------------------|
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| Constraint | *Optional* |
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| Definition | The URL of the downloadable file in a given format. E.g. CSV file or NetCDF file. |
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| Range | [rdfs:Resource](http://www.w3.org/2000/01/rdf-schema#Resource) |
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| Usage note | [dcat:downloadURL](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_download_url) should be used for the URL at which this distribution is available directly, typically through a HTTP Get request. |
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## 4. Classe : dct:PeriodOfTime
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### 2.6 Propriété : dct:rights
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| **RDF Class:** | [dct:PeriodOfTime](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/PeriodOfTime) |
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|--------------------|:--------------------|
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| Constraint | *Mandatory* |
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| Definition | An interval of time that is named or defined by its start and end. |
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|Usage note | The start and end of the interval should be given by using properties [dcat:startDate](https://www.w3.org/TR/vocab-dcat-2/#Property:period_start_date) and [dcat:endDate](https://www.w3.org/TR/vocab-dcat-2/#Property:period_end_date) respectively. The interval can also be open - i.e., it can have just a start or just an end. |
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| **RDF Property:** | [dct:rights](http://purl.org/dc/terms/rights) |
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|-------------------|:--------------------|
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| Constraint | *Optional* |
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| Definition | Information about rights held in and over the distribution. |
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| Range | [dct:RightsStatement](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#terms-RightsStatement) |
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| Usage note | [dct:license](http://purl.org/dc/terms/license), which is a sub-property of dct:rights, can be used to link a distribution to a license document. However, [dct:rights](http://purl.org/dc/terms/rights) allows linking to a rights statement that can include licensing information as well as other information that supplements the license such as attribution. Information about licenses and rights should be provided on the level of Distribution. |
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### 4.1 Propriété : dcat:startDate
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### 2.7 Propriété : dcat:accessService
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| **RDF Property:** | [dcat:startDate](https://www.w3.org/TR/vocab-dcat-2/#Property:period_start_date) |
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| **RDF Property:** | [dcat:accessService](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_access_service) |
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|-------------------|:--------------------|
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| Constraint | *Mandatory* |
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| Definition | The start of the period. |
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) encoded using the relevant ISO 8601 Date and Time compliant string [DATETIME](https://www.w3.org/TR/NOTE-datetime) and typed using the appropriate XML Schema datatype [XMLSCHEMA11-2](https://www.w3.org/TR/xmlschema11-2/) ([xsd:gYear](https://www.w3.org/TR/xmlschema11-2/#gYear), [xsd:gYearMonth](https://www.w3.org/TR/xmlschema11-2/#gYearMonth), [xsd:date](https://www.w3.org/TR/xmlschema11-2/#date), or [xsd:dateTime](https://www.w3.org/TR/xmlschema11-2/#dateTime)). |
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| Constraint | *Optional* |
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| Definition | A data service that gives access to the distribution of the dataset.|
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| Range | [dcat:DataService](https://www.w3.org/TR/vocab-dcat-2/#Class:Data_Service) |
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| Usage note | [dcat:accessService](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_access_service) should be used to link to a description of a [dcat:DataService](https://www.w3.org/TR/vocab-dcat-2/#Class:Data_Service) that can provide access to this distribution. |
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### 4.2 Propriété : dcat:endDate
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### 2.8 Propriété : adms:representationTechnique
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| **RDF Property:** | [dcat:endDate](https://www.w3.org/TR/vocab-dcat-2/#Property:period_end_date) |
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| **RDF Property:** | [adms:representationTechnique](https://www.w3.org/TR/vocab-adms/#representation-technique) |
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|-------------------|:--------------------|
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| Constraint | *Recommended* |
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| Definition |The end of the period.|
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) encoded using the relevant ISO 8601 Date and Time compliant string [DATETIME](https://www.w3.org/TR/NOTE-datetime) and typed using the appropriate XML Schema datatype [XMLSCHEMA11-2](https://www.w3.org/TR/xmlschema11-2/) ([xsd:gYear](https://www.w3.org/TR/xmlschema11-2/#gYear), [xsd:gYearMonth](https://www.w3.org/TR/xmlschema11-2/#gYearMonth), [xsd:date](https://www.w3.org/TR/xmlschema11-2/#date), or [xsd:dateTime](https://www.w3.org/TR/xmlschema11-2/#dateTime)). |
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| Constraint | *Optional* |
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| Definition | The machine-readable language in which a Distribution is expressed. |
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| Range | [skos:Concept](http://www.w3.org/2004/02/skos/core#Concept) |
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| Usage note | This property SHOULD be used to express the spatial representation type (grid, vector, tin). |
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| Domain value | [INSPIRE-SRT](https://inspire.ec.europa.eu/metadata-codelist/SpatialRepresentationType) |
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### 2.9 Propriété : dcat:packageFormat
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| **RDF Property:** | [dcat:packageFormat](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_packaging_format) |
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|-------------------|:--------------------|
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| Constraint | *Optional* |
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| Definition | The package format of the distribution in which one or more data files are grouped together, e.g. to enable a set of related files to be downloaded together..|
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| Range | [dct:MediaType](http://purl.org/dc/terms/MediaType) |
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| Usage note | This property is used when the files in the distribution are packaged, e.g. in a ZIP file. The format should be expressed using a media type as defined by [IANA-MEDIA-TYPES](https://www.iana.org/assignments/media-types/), if available. See also [dcat:compressFormat](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_compression_format).|
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### 4.3 Contexte et exemples en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [dct:PeriodOfTime](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/PeriodOfTime)
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### 2.10 Contexte et exemples en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [dcat:Distribution](http://www.w3.org/ns/dcat#Distribution)
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Exemple d'instanciation de l'intervalle temporel associé à la collection de données concernant [projet FLATSIM - mesure des déformations de surface terrestre -](https://gitlab.in2p3.fr/gaia-data/wp3-services/vocabulaires/dataterra_ap/dataterra_geodcatap/-/blob/main/examples/FLATSIM_interferometry/latest/flatsim_interfero_from_S1.ttl) (suivre le lien pour accéder au code source de l'exemple complet).
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Le code source suivant montre un exemple d'instanciation d'une ressource de type [dcat:Distribution](http://www.w3.org/ns/dcat#Distribution) pour un jeux de données [Sentinel 2 niveau 1C] qui n'a pas de lien direct de téléchargement vers un fichier de distribution (pas de propriété [dcat:downloadURL](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_download_url) pour le niveau jeux de données) mais une URL qui pointe vers une ressource décrivant la distribution et donnant accès au fichier à partir d'une authentification dans le système.
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```turtle
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@prefix dct: <http://purl.org/dc/terms/> .
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@prefix dcat: <http://www.w3.org/ns/dcat#> .
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@prefix dcat: <http://www.w3.org/ns/dcat#> .
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@prefix : <http://example-dataterra.org/> .
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:dataset_temporal a dct:PeriodOfTime ;
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dcat:startDate "2014-10-01"^^xsd:date ;
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dcat:endDate "2021-05-01"^^xsd:date .
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:dataset_distribution a dcat:Distribution ; # Physical embodiment of the Dataset in a particular format.
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dcat:accessURL <https://peps.cnes.fr/rocket/#/collections/S2ST/76d8e095-ca83-5def-9a49-4a92411d7ef5> ;
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dct:description "The distribution contains metadata files, images and quicklook files. The Distribution is delivered in SAFE format"@en ;
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dct:license <https://sentinel.esa.int/documents/247904/690755/Sentinel_Data_Legal_Notice> ;
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dcat:accessService distribution_dataservice .
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```
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Cette période temporelle peut être définit par une date de début uniquement, tel est le cas pour les jeux de données qui présentent des mesures en continue ( séries temporelles par exemple), comme est le cas pour la collection de l'[Atlas des trajectoires de tourbillons à méso-échèlle] :
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[Atlas des trajectoires de tourbillons à méso-échèlle]:https://gitlab.in2p3.fr/gaia-data/wp3-services/vocabulaires/dataterra_ap/dataterra_geodcatap/-/blob/main/examples/eddies_trace_nrt_dt/latest/exemple_eddies_traces_nrt_dt.ttl
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Un deuxième exemple ci-dessous avec une [dcat:Distribution](http://www.w3.org/ns/dcat#Distribution) d'un jeux de données dans laquelle un téléchargement direct d'un fichier est disponible avec la propriété [dcat:downloadURL](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_download_url). Voir l'exemple complet de fiche du dataset [Traits de Côte à Haute Résolution](https://gitlab.in2p3.fr/gaia-data/wp3-services/vocabulaires/dataterra_ap/dataterra_geodcatap/-/blob/main/examples/tchr_shom/latest/tchr_shom.ttl) présent dans le catalogue du pôle Fom@Ter.
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```turtle
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@prefix dct: <http://purl.org/dc/terms/> .
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@prefix dcat: <http://www.w3.org/ns/dcat#> .
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@prefix adms: <http://www.w3.org/ns/adms#> .
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@prefix : <http://example-dataterra.org/> .
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:dataset_temporal_open a dct:PeriodOfTime ;
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dcat:startDate "1993-01-01T00:00:00"^^xsd:dateTime .
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# dcat:endDate "YYYY-MM-DDThh:mm:ss.s"^^xsd:dateTime ; # No endDate for open interval for data series.
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:dataset_distribution a dcat:Distribution ; # Physical embodiment of the Dataset in a particular format.
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dct:license <https://www.etalab.gouv.fr/wp-content/uploads/2017/04/ETALAB-Licence-Ouverte-v2.0.pdfLicense_URI> ;
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dct:format <http://publications.europa.eu/resource/authority/file-type/SHP>, <http://publications.europa.eu/resource/authority/file-type/GML> ;
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dcat:compressFormat <http://publications.europa.eu/resource/authority/file-type/7Z> ;
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adms:representationTechnique <https://inspire.ec.europa.eu/metadata-codelist/SpatialRepresentationType/vector> ; # This property SHOULD be used to express the spatial representation type (grid, vector, tin)
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dcat:downloadURL <https://services.data.shom.fr/INSPIRE/telechargement/prepackageGroup/TCHR_PACK_DL/prepackage/Kerguelen/file/Kerguelen.7z> ; # This property contains a URL that is a direct link to a downloadable file in a given format.
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dcat:accessService distribution_dataservice .
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```
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## 5. Classe : dcat:Relationship
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## 3. Classe : dcat:DataService
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| **RDF Class:** | [dcat:Relationship](https://www.w3.org/TR/vocab-dcat-2/#Class:Relationship) |
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| **RDF Class:** | [dcat:DataService](https://www.w3.org/TR/vocab-dcat-2/#Class:Data_Service) |
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|--------------------|:--------------------|
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| Constraint | *Recommended* |
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| Definition | An association class for attaching additional information to a relationship between DCAT Resources.|
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| Sub-class of | [prov:EntityInfluence](https://www.w3.org/TR/prov-o/#EntityInfluence) |
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| Usage note | Use to characterize a relationship between datasets, and potentially other resources, where the nature of the relationship is known but is not adequately characterized by the standard [DCTERMS](https://www.w3.org/TR/vocab-dcat-2/#bib-dcterms) properties ([dct:hasPart](http://purl.org/dc/terms/hasPart), [dct:isPartOf](http://purl.org/dc/terms/isPartOf), [dct:conformsTo](http://purl.org/dc/terms/conformsTo), [dct:isFormatOf](http://purl.org/dc/terms/isFormatOf), [dct:hasFormat](http://purl.org/dc/terms/hasFormat), [dct:isVersionOf](http://purl.org/dc/terms/isVersionOf), [dct:hasVersion](http://purl.org/dc/terms/hasVersion), [dct:replaces](http://purl.org/dc/terms/replaces), [dct:isReplacedBy](http://purl.org/dc/terms/isReplacedBy), [dct:references](http://purl.org/dc/terms/references), [dct:isReferencedBy](http://purl.org/dc/terms/isReferencedBy), [dct:requires](http://purl.org/dc/terms/requires), [dct:isRequiredBy](http://purl.org/dc/terms/isRequiredBy)) or [PROV-O](https://www.w3.org/TR/vocab-dcat-3/#bib-prov-o) properties ([prov:wasDerivedFrom](http://www.w3.org/TR/prov-o/#wasDerivedFrom), [prov:wasInfluencedBy](https://www.w3.org/TR/prov-o/#wasInfluencedBy), [prov:wasQuotedFrom](http://www.w3.org/TR/prov-o/#wasQuotedFrom), [prov:wasRevisionOf](https://www.w3.org/TR/prov-o/#wasRevisionOf), [prov:hadPrimarySource](https://www.w3.org/TR/prov-o/#hadPrimarySource), [prov:alternateOf](https://www.w3.org/TR/prov-o/#alternateOf), [prov:specializationOf](https://www.w3.org/TR/prov-o/#specializationOf)).|
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| Constraint | *Optional* |
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| Definition | A collection of operations that provides access to one or more datasets or data processing functions. |
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| Sub-class of | [dcat:Resource](https://www.w3.org/TR/vocab-dcat-2/#Class:Resource) |
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| Sub-class of | [dctype:Service](http://purl.org/dc/dcmitype/Service) |
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| Usage note | If a [dcat:DataService](http://www.w3.org/ns/dcat#DataService) is bound to one or more specified Datasets, they are indicated by the [dcat:servesDataset](https://www.w3.org/TR/vocab-dcat-2/#Property:data_service_serves_dataset) property. |
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### 5.1 Propriété : dct:relation
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### 3.1 Propriété : dcat:endpointURL
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| **RDF Property:** | [dct:relation](http://purl.org/dc/terms/relation) |
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| **RDF Property:** | [dcat:endpointURL](https://www.w3.org/TR/vocab-dcat-2/#Property:data_service_endpoint_url) |
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|-------------------|:--------------------|
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|
| Constraint | *Mandatory* |
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|
| Definition | The resource related to the source resource. |
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|
| Usage note | In the context of a [dcat:Relationship](https://www.w3.org/TR/vocab-dcat-2/#Class:Relationship) this is expected to point to another [dcat:Dataset](https://www.w3.org/TR/vocab-dcat-2/#Class:Dataset) or other cataloged resource. |
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|
| Constraint | *Mandatory* |
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|
| Definition | The root location or primary endpoint of the service (a Web-resolvable IRI). |
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| Range | [rdfs:Resource](http://www.w3.org/2000/01/rdf-schema#Resource) |
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### 5.2 Propriété : dcat:hadRole
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| **RDF Property:** | [dcat:hadRole](https://www.w3.org/TR/vocab-dcat-2/#Property:relationship_hadRole) |
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### 3.2 Propriété : dcat:servesDataset
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| **RDF Property:** | [dcat:servesDataset](https://www.w3.org/TR/vocab-dcat-2/#Property:data_service_serves_dataset) |
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|-------------------|:--------------------|
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| Constraint | *Mandatory* |
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|
| Definition | The function of an entity or agent with respect to another entity or resource. |
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|
| Domain | [dcat:Relationship](https://www.w3.org/TR/vocab-dcat-2/#Class:Relationship) |
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| Range | [dcat:Role](https://www.w3.org/TR/vocab-dcat-2/#Class:Role) |
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|
| Usage note | May be used in a qualified-relation to specify the role of an [prov:Entity](https://www.w3.org/TR/prov-o/#Entity) with respect to another [prov:Entity](https://www.w3.org/TR/prov-o/#Entity). It is recommended that the value be taken from a controlled vocabulary of entity roles. |
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|
| Domain value | [IANA-RELATIONS](https://www.iana.org/assignments/link-relations/link-relations.xhtml). |
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> **Note** : Plus de détail concernant les *Qualified relations* pour dcat : https://www.w3.org/TR/vocab-dcat-2/#qualified-forms
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|
|
### 5.3 Contexte et exemples en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [dcat:Relationship](https://www.w3.org/TR/vocab-dcat-2/#Class:Relationship)
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|
La classe [dcat:Relationship](https://www.w3.org/TR/vocab-dcat-2/#Class:Relationship) permets d'établir le lien entre différentes types de ressources liées au [dcat:Dataset](https://www.w3.org/TR/vocab-dcat-2/#Class:Dataset). La liste suivante montre des exemples pour les ressources identifiés dans le contexte des données Data Terra, concrètement pour les métadonnées concernant la collection [Atlas des trajectoires de tourbillons à méso-échèlle] :
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|
|
| Constraint | *Recommended* |
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|
|
| Definition | A collection of data that this data service can distribute. |
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|
| Range | [dcat:Dataset](https://www.w3.org/TR/vocab-dcat-2/#Class:Dataset) |
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|
+ Ressource : fiche de métadonnées en provenance du catalogue du pôle Odatis, également appelée fiche d'origine.
|
|
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|
|
|
```turtle
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|
|
@prefix dct: <http://purl.org/dc/terms/> .
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|
|
@prefix dcat: <http://www.w3.org/ns/dcat#> .
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|
|
@prefix : <http://example-dataterra.org/> .
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|
|
### 3.3 Propriété : dct:conformsTo
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|
|
:relation_source_metadata a dcat:Relationship ; # Relation for metadata from source catalog
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|
|
dct:relation <https://www.odatis-ocean.fr/en/data-and-services/data-access/direct-access-to-the-data-catalogue#/metadata/387879ca-24b7-4bbf-a551-33356dc76656> ;
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|
|
dcat:hadRole <http://www.iana.org/assignments/relation/original> .
|
|
|
```
|
|
|
| **RDF Property:** | [dct:conformsTo](http://purl.org/dc/terms/conformsTo) |
|
|
|
|-------------------|:--------------------|
|
|
|
| Constraint | *Recommended* |
|
|
|
| Definition | An established standard to which the described resource conforms. |
|
|
|
| Range | [dct:Standard](http://purl.org/dc/terms/Standard) (A basis for comparison; a reference point against which other things can be evaluated.) |
|
|
|
| Usage note | This property should be used to indicate the model, schema, ontology, view or profile that the cataloged resource content conforms to. |
|
|
|
| Domain value | [INSPIRE-PV](https://inspire.ec.europa.eu/metadata-codelist/ProtocolValue) |
|
|
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|
|
|
+ Ressource : chaque jeux de données composant de la collection Atlas, à savoir les trajectoires de tourbillons en NRT (Near Real Time) et DT (Delayed Time).
|
|
|
### 3.4 Propriété : dct:title
|
|
|
|
|
|
```turtle
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|
|
@prefix dct: <http://purl.org/dc/terms/> .
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|
|
@prefix dcat: <http://www.w3.org/ns/dcat#> .
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|
|
@prefix : <http://example-dataterra.org/> .
|
|
|
| **RDF Property:** | [dct:title](http://purl.org/dc/terms/title) |
|
|
|
|-------------------|:--------------------|
|
|
|
| Constraint | *Recommended* |
|
|
|
| Definition | This property contains a name given to the Data Service. |
|
|
|
| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) |
|
|
|
|
|
|
:relation_dataset_nrt a dcat:Relationship ; # Relation for Near Real Time dataset
|
|
|
dct:relation :Mesoscale_eddy_trajectory_nrt_product ;
|
|
|
dcat:hadRole <http://www.iana.org/assignments/relation/item> .
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|
|
### 3.5 Propriété : dcat:endpointDescription
|
|
|
|
|
|
:relation_dataset_dt a dcat:Relationship # Relation for Delayed Time dataset
|
|
|
dct:relation :Mesoscale_eddy_trajectory_dt_product ;
|
|
|
dcat:hadRole <http://www.iana.org/assignments/relation/item> .
|
|
|
```
|
|
|
A noter que dans la définition des datasets pour les items (NRT et DT), la même classe [dcat:Relationship](https://www.w3.org/TR/vocab-dcat-2/#Class:Relationship) sera utilisé pour mettre en relation ces datasets et la collection, cette fois fois-ci le rôle ([dcat:hadRole](https://www.w3.org/TR/vocab-dcat-2/#Property:relationship_hadRole)) à mettre en place est le pointeur vers la collection, comme dans l'exemple qui suit :
|
|
|
| **RDF Property:** | [dcat:endpointDescription](https://www.w3.org/TR/vocab-dcat-2/#Property:data_service_endpoint_description) |
|
|
|
|-------------------|:--------------------|
|
|
|
| Constraint | *Recommended* |
|
|
|
| Definition | A description of the services available via the end-points, including their operations, parameters etc. |
|
|
|
| Range | [rdfs:Resource](http://www.w3.org/2000/01/rdf-schema#Resource) |
|
|
|
| Usage note | The endpoint description gives specific details of the actual endpoint instances, while [dct:conformsTo](http://purl.org/dc/terms/conformsTo) is used to indicate the general standard or specification that the endpoints implement. |
|
|
|
| Usage note | An endpoint description may be expressed in a machine-readable form, such as an OpenAPI (Swagger) description [OpenAPI](https://www.w3.org/TR/vocab-dcat-2/#bib-openapi), an OGC GetCapabilities response [WFS](https://www.w3.org/TR/vocab-dcat-2/#bib-wfs), [ISO-19142](https://www.w3.org/TR/vocab-dcat-2/#bib-iso-19142), [WMS](https://www.w3.org/TR/vocab-dcat-2/#bib-wms), [ISO-19128](https://www.w3.org/TR/vocab-dcat-2/#bib-iso-19128), a SPARQL Service Description [SPARQL11-SERVICE-DESCRIPTION](https://www.w3.org/TR/vocab-dcat-2/#bib-sparql11-service-description), an [OpenSearch](https://www.w3.org/TR/vocab-dcat-2/#bib-opensearch) or [WSDL20](https://www.w3.org/TR/vocab-dcat-2/#bib-wsdl20) document, a Hydra API description [HYDRA](https://www.w3.org/TR/vocab-dcat-2/#bib-hydra), else in text or some other informal mode if a formal representation is not possible. |
|
|
|
|
|
|
```turtle
|
|
|
@prefix dct: <http://purl.org/dc/terms/> .
|
|
|
@prefix dcat: <http://www.w3.org/ns/dcat#> .
|
|
|
@prefix : <http://example-dataterra.org/> .
|
|
|
### 3.6 Contexte et exemple en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [dcat:DataService](http://www.w3.org/ns/dcat#DataService)
|
|
|
|
|
|
:relation_dataset_atlas a dcat:Relationship ; # Relation for Atlas dataset collection
|
|
|
dct:relation :Mesoscale_eddy_trajectory_atlas_product ;
|
|
|
dcat:hadRole <http://www.iana.org/assignments/relation/collection> .
|
|
|
```
|
|
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|
|
+ Ressource : publications liés aux jeux de données identifiés par leur DOI (dans le détail : le document [META3.1exp: A new Global Mesoscale Eddy Trajectories Atlas derived from altimetry](https://doi.org/10.5194/essd-2021-300) et le document [A New Sea Surface Height–Based Code for Oceanic Mesoscale Eddy Tracking](https://doi.org/10.1175/JTECH-D-14-00019.1)).
|
|
|
Le code source d'exemple ci-dessous décrit une ressource de type [dcat:DataService](https://www.w3.org/TR/vocab-dcat-2/#Class:Data_Service) pour le service de traitement sous protocole OGC-WPS (Web Processing Service) mis à disposition par le service [PEPS](https://peps.cnes.fr) pour un jeux de données [Sentinel 2 niveau 1C] (suivre le lien pour accéder au code source de l'exemple complet).
|
|
|
|
|
|
```turtle
|
|
|
@prefix dct: <http://purl.org/dc/terms/> .
|
|
|
@prefix dcat: <http://www.w3.org/ns/dcat#> .
|
|
|
@prefix dcat: <http://www.w3.org/ns/dcat#> .
|
|
|
@prefix : <http://example-dataterra.org/> .
|
|
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|
|
|
:relation_documents a dcat:Relationship ; # Relation for bibliographic references
|
|
|
dct:relation <https://doi.org/10.5194/essd-2021-300>, <https://doi.org/10.1175/JTECH-D-14-00019.1> ;
|
|
|
dcat:hadRole <http://www.iana.org/assignments/relation/publication> .
|
|
|
:distribution_dataservice a dcat:DataService ;
|
|
|
dct:title "Web Processing Service (WPS) for satellite image treatment from PEPS."@en ;
|
|
|
dct:description "An online, on-demand standard processing service for Sentinel1 and Sentinel2 images."@en ;
|
|
|
dcat:endpointURL <https://peps.cnes.fr/resto/wps?service=WPS> ;
|
|
|
dct:conformsTo <http://www.opengeospatial.org/standards/wps> ;
|
|
|
dcat:servesDataset :S2A_MSIL1C_20200709T105031_N0209_R051_T31TCJ_20200709T125257.SAFE ;
|
|
|
dcat:endpointDescription <https://peps.cnes.fr/resto/wps?service=WPS&request=GetCapabilities&version=1.0.0> .
|
|
|
```
|
|
|
|
|
|
Pour aller plus loin dans cet exemple, voici le lien vers le code source concernant les métadonnées de l'[Atlas des trajectoires de tourbillons à méso-échèlle].
|
|
|
|
|
|
## 6. Classe : foaf:Agent
|
|
|
## 4. Classe : foaf:Agent
|
|
|
|
|
|
| **RDF Class:** | [foaf:Agent](http://xmlns.com/foaf/0.1/#term_Agent) |
|
|
|
|--------------------|:--------------------|
|
... | ... | @@ -535,7 +451,7 @@ Pour aller plus loin dans cet exemple, voici le lien vers le code source concern |
|
|
| Definition | An agent (eg. person, group, software or physical artifact). |
|
|
|
| Usage note | An entity (e.g., an individual or an organisation) that is associated with Catalogue Records, Data Services, or Datasets. If the Agent is an organisation, the use of the Organization Ontology [VOCAB-ORG](https://www.w3.org/TR/vocab-org/) is recommended. |
|
|
|
|
|
|
### 6.1 Propriété : foaf:name
|
|
|
### 4.1 Propriété : foaf:name
|
|
|
|
|
|
| **RDF Property:** | [foaf:name](http://xmlns.com/foaf/0.1/#term_name) |
|
|
|
|-------------------|:--------------------|
|
... | ... | @@ -545,7 +461,7 @@ Pour aller plus loin dans cet exemple, voici le lien vers le code source concern |
|
|
| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) |
|
|
|
| Usage note | This property contains a name of the Agent. This property can be repeated for different versions of the name (e.g. the name in different languages). |
|
|
|
|
|
|
### 6.2 Propriété : foaf:mbox
|
|
|
### 4.2 Propriété : foaf:mbox
|
|
|
|
|
|
| **RDF Property:** | [foaf:mbox](http://xmlns.com/foaf/0.1/#term_mbox) |
|
|
|
|-------------------|:--------------------|
|
... | ... | @@ -555,7 +471,7 @@ Pour aller plus loin dans cet exemple, voici le lien vers le code source concern |
|
|
| Range | [rdfs:Resource](http://www.w3.org/2000/01/rdf-schema#Resource) |
|
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|
| Usage note | This property may be used to provide the email address of the Agent, specified using fully qualified *mailto:* URI scheme |
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### 6.3 Contexte et exemples en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [foaf:Agent](http://xmlns.com/foaf/0.1/#term_Agent)
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### 4.3 Contexte et exemples en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [foaf:Agent](http://xmlns.com/foaf/0.1/#term_Agent)
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Plusieurs rôles d'agents sont présents dans le contexte des jeux de données présents dans le catalogue fédéré Data Terra. Ces différents rôles sont associés à des propriétés spécifique au niveau de la ressource [dcat:Dataset](https://www.w3.org/TR/vocab-dcat-2/#Class:Dataset). Voici une liste, non exhaustive, des possible rôles et propriétés ainsi identifiés :
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... | ... | @@ -585,241 +501,203 @@ Dans l'exemple de code qui suit, une ressource de type agent pour le [CNES](http |
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[Sentinel 2 niveau 1C]:https://gitlab.in2p3.fr/gaia-data/wp3-services/vocabulaires/dataterra_ap/dataterra_geodcatap/-/blob/main/examples/sentinel2/latest/example_S2A_MSIL1C.ttl
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## 5. Classe : dct:Location
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## 7. Classe : dct:RightsStatement
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> **Note**: DCAT identifie 3 scénarios pour les licences et droits d'accès ou d'utilisation : les ressources de type licences avec [dct:license](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/license), les ressources concernant les droits d'accès et d'utilisation avec [dct:accessRights](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/accessRights), et tous les autres cas, notamment les cas de déclaration de copyright ou droits d'auteurs avec [dct:rights](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/rights).
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| **RDF Class:** | [dct:RightsStatement](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/RightsStatement) |
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| **RDF Class:** | [dct:Location](http://dublincore.org/documents/dcmi-terms/#terms-Location) |
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|--------------------|:--------------------|
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| Constraint | *Mandatory* |
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| Definition | A statement about the intellectual property rights (IPR) held in or over a resource, a legal document giving official permission to do something with a resource, or a statement about access rights. |
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| Usage note | Information about licenses and rights may be provided for the Resource. |
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| Definition | A spatial region or named place. |
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|Usage note | It can be represented using a controlled vocabulary or with geographic coordinates. <br/>For an extensive geometry (i.e., a set of coordinates denoting the vertices of the relevant geographic area), the property [locn:geometry](https://www.w3.org/TR/vocab-dcat-2/#Property:location_geometry) should be used. <br/> For a geographic bounding box delimiting a spatial area the property [dcat:bbox](https://www.w3.org/TR/vocab-dcat-2/#Property:location_bbox) should be used. <br/> For the geographic center of a spatial area, or another characteristic point, the property [dcat:centroid](https://www.w3.org/TR/vocab-dcat-2/#Property:location_centroid) should be used. |
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### 7.1 Propriété : rdfs:label (rights statement text)
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### 5.1 Propriété : dcat:bbox
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| **RDF Property:** | [rdfs:label](https://www.w3.org/TR/rdf-schema/#ch_label) |
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| **RDF Property:** | [dcat:bbox](https://www.w3.org/TR/vocab-dcat-2/#Property:location_bbox) |
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|-------------------|:--------------------|
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| Constraint | *Recommended* |
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| Definition | A human readable label for a resource. |
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| Domain | [rdfs:Resource](http://www.w3.org/2000/01/rdf-schema#Resource) |
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) |
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| Usage note | This property contains the text of the Rights Statement. Multilingual labels are supported using the language tagging facility of RDF literals. |
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| Constraint | *Mandatory* |
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| Definition | The geographic bounding box of a resource. |
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| Range | [rdfs:Literal](https://www.w3.org/TR/rdf-schema/#ch_literal) |
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| Usage note | The range of this property is intentionally generic, with the purpose of allowing different geometry encodings. E.g., the geometry could be encoded as WKT ([geosparql:asWKT](http://www.opengis.net/ont/geosparql#asWKT) [GeoSPARQL](http://www.opengeospatial.org/standards/geosparql)).|
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### 7.2 Contexte et exemples en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [dct:RightsStatement](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/RightsStatement)
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Un exemple détaillé d'une localisation définie par un bounding box est disponible à partir de la description [2.5 Propriété : dct:spatial (spatial/geographical coverage)](https://gitlab.in2p3.fr/gaia-data/wp3-services/vocabulaires/dataterra_ap/guidelines_profil_application/-/wikis/Specification#25-propri%C3%A9t%C3%A9-dctspatial-spatialgeographical-coverage) au niveau de la classe *dcat:Dataset*.
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Exemple d'instance pour les droits d'utilisation concernant le jeux de données des [Traits de Côte à Haute Résolution] présent dans le catalogue du pôle Fom@Ter.
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### 5.2 Propriété : locn:geometry
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```turtle
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@prefix dct: <http://purl.org/dc/terms/> .
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@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
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@prefix : <http://example-dataterra.org/> .
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| **RDF Property:** | [locn:geometry](https://www.w3.org/ns/locn#locn:geometry) |
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|-------------------|:--------------------|
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| Constraint | *Optional* |
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| Definition | Associates any resource with the corresponding geometry. |
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| Range | [rdfs:Literal](https://www.w3.org/TR/rdf-schema/#ch_literal) |
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| Usage note | The range of this property is intentionally generic, with the purpose of allowing different geometry encodings. E.g., the geometry could be encoded as WKT ([geosparql:asWKT](http://www.opengis.net/ont/geosparql#asWKT) [GeoSPARQL](http://www.opengeospatial.org/standards/geosparql)).|
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:dataset_right a dct:RightsStatement ; # Citation constraints for dataset
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rdfs:label "Do not use for navigation.The product is not designed for use at scales of more than 1:3 000 in mainland France and 1:20 000 in Kerguelen. The High Resolution Coastline file can be freely used in the integrated databases or services, under the following conditions: - explicit mention of the source by indicating ©Shom 2016. http://dx.doi.org/10.17183/TCHR when displayed, - clear indication to the user of any restrictions which apply to data, - website references must show the Shom logo and a link to the Shom website www.shom.fr. The high resolution coastline was not designed for use in the operation of nuclear facilities, air navigation or communications systems, navigation or air traffic control systems, or any other area referred to as hazardous activities, where a failure of the product could result in death, personal injury or serious physical or environmental damage. In general, in metropolitan France the planimetric accuracy is better than 5 m (uncertainty of the source data, bathymetric lidar or OrtholittoralV2). On certain particular areas (absence of the two previous sources), as well as on all the archipelago of Kerguelen, the precision can reach a few tens of meters. The High Resolution Coastline file can be freely used in the integrated databases or services, under the following conditions: - explicit mention of the source by indicating ©Shom 2016. http://dx.doi.org/10.17183/TCHR when displayed, - clear indication to the user of any restrictions which apply to data, - website references must show the Shom logo and a link to the Shom website www.shom.fr. The product is distributed under an Opendata license (version 2.0, April 2017), defined by the Etalab mission. No public access restrictions."@en .
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```
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### 5.3 Propriété : dct:identifier
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[Traits de Côte à Haute Résolution]:https://gitlab.in2p3.fr/gaia-data/wp3-services/vocabulaires/dataterra_ap/dataterra_geodcatap/-/blob/main/examples/tchr_shom/latest/tchr_shom.ttl
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| **RDF Property:** | [dct:identifier](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/identifier) |
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|-------------------|:--------------------|
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| Constraint | *Optional* |
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| Definition | An unambiguous reference to the resource within a given context. |
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| Range | [rdfs:Literal](https://www.w3.org/TR/rdf-schema/#ch_literal) |
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| Usage note | This property contains the geographic identifier for the Location, e.g., the URI or other unique identifier in the context of the relevant gazetteer. |
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## 8. Classe : dcat:Distribution
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| **RDF Class:** | [dcat:Distribution](https://www.w3.org/TR/vocab-dcat-2/#Class:Distribution) |
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|--------------------|:--------------------|
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| Constraint | *Mandatory* |
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| Definition | A specific representation of a dataset. A dataset might be available in multiple serializations that may differ in various ways, including natural language, media-type or format, schematic organization, temporal and spatial resolution, level of detail or profiles (which might specify any or all of the above). |
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| Usage note | This represents a general availability of a dataset. It implies no information about the actual access method of the data, i.e. whether by direct download, API, or through a Web page. The use of [dcat:downloadURL](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_download_url) property indicates directly downloadable distributions. |
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### 5.4 Contexte et exemple en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [dct:Location](http://dublincore.org/documents/dcmi-terms/#terms-Location).
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### 8.1 Propriété : dct:description
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La classe *dct:Location* peut également être instanciée en utilisant une géométrie de type POINT (coordonnées de points), et/ou pointer vers les URI de nom de localisation proposés dans un service gazetteer comme [GeoNames](https://www.geonames.org). Ci-dessous un exemple d'instanciation en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de ce type de localisation extrait du jeux de données concernant la [mesure de particules atmosphériques].
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| **RDF Property:** | [dct:description](http://purl.org/dc/terms/description) |
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|-------------------|:--------------------|
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| Constraint | *Mandatory* |
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| Definition | A free-text account of the distribution. |
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) |
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```turtle
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@prefix dct: <http://purl.org/dc/terms/> .
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@prefix gsp: <http://www.opengis.net/ont/geosparql#> .
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@prefix locn: <http://www.w3.org/ns/locn#> .
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@prefix : <http://example-dataterra.org/> .
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:dataset_spatial_points a dct:Location ;
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locn:geometry "<http://www.opengis.net/def/crs/OGC/1.3/CRS84> POINT(-81.37 48.57 0.0)"^^gsp:wktLiteral , "POINT(0.1 43.7 0.0)"^^gsp:wktLiteral , "POINT(-21.9 64.1 0.0)"^^gsp:wktLiteral , "POINT(21.1 67.9 0.0)"^^gsp:wktLiteral , "POINT(133.9 -23.8 0.0)"^^gsp:wktLiteral ] ; # This property refers to the geographic point of a resource, "POINT(lon lat elevation)"^^gsp:wktLiteral .
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:dataset_spatial_gazetteer a dct:Location ;
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dct:identifier <https://www.geonames.org/6166739/>, <https://www.geonames.org/3038394/>, <https://www.geonames.org/2629691/>, <https://www.geonames.org/605155/>, <https://www.geonames.org/2077895/> . # Spatial property by geographical identifier from GeoNames Gazetteer service.
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```
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### 8.2 Propriété : dcat:accessURL
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## 6. Classe : dct:PeriodOfTime
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| **RDF Property:** | [dcat:accessURL](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_access_url) |
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|-------------------|:--------------------|
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| **RDF Class:** | [dct:PeriodOfTime](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/PeriodOfTime) |
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|--------------------|:--------------------|
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| Constraint | *Mandatory* |
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| Definition | A URL of the resource that gives access to a distribution of the dataset. E.g. landing page, feed, SPARQL endpoint. |
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| Range | [rdfs:Resource](http://www.w3.org/2000/01/rdf-schema#Resource) |
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| Usage note | [dcat:accessURL](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_access_url) should be used for the URL of a service or location that can provide access to this distribution, typically through a Web form, query or API call. [dcat:downloadURL](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_download_url) is preferred for direct links to downloadable resources.If the distribution(s) are accessible only through a landing page (i.e. direct download URLs are not known), then the landing page URL associated with the [dcat:Dataset](https://www.w3.org/TR/vocab-dcat-2/#Class:Dataset) should be duplicated as access URL on a distribution. |
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| Definition | An interval of time that is named or defined by its start and end. |
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|Usage note | The start and end of the interval should be given by using properties [dcat:startDate](https://www.w3.org/TR/vocab-dcat-2/#Property:period_start_date) and [dcat:endDate](https://www.w3.org/TR/vocab-dcat-2/#Property:period_end_date) respectively. The interval can also be open - i.e., it can have just a start or just an end. |
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### 8.3 Propriété : dct:license
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### 6.1 Propriété : dcat:startDate
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| **RDF Property:** | [dct:license](http://purl.org/dc/terms/license) |
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| **RDF Property:** | [dcat:startDate](https://www.w3.org/TR/vocab-dcat-2/#Property:period_start_date) |
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|-------------------|:--------------------|
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| Constraint | *Mandatory* |
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| Definition | A legal document under which the distribution is made available. |
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| Sub-property of | [dct:rights](http://purl.org/dc/terms/rights) |
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| Range | [dct:LicenseDocument](http://purl.org/dc/terms/LicenseDocument) |
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| Usage note | Information about licenses and rights should be provided on the level of Distribution. Information about licenses and rights may be provided for a Dataset in addition to but not instead of the information provided for the Distributions of that Dataset. Providing license or rights information for a Dataset that is different from information provided for a Distribution of that Dataset should be avoided as this can create legal conflicts. |
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| Definition | The start of the period. |
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) encoded using the relevant ISO 8601 Date and Time compliant string [DATETIME](https://www.w3.org/TR/NOTE-datetime) and typed using the appropriate XML Schema datatype [XMLSCHEMA11-2](https://www.w3.org/TR/xmlschema11-2/) ([xsd:gYear](https://www.w3.org/TR/xmlschema11-2/#gYear), [xsd:gYearMonth](https://www.w3.org/TR/xmlschema11-2/#gYearMonth), [xsd:date](https://www.w3.org/TR/xmlschema11-2/#date), or [xsd:dateTime](https://www.w3.org/TR/xmlschema11-2/#dateTime)). |
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### 8.4 Propriété : dct:format
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### 6.2 Propriété : dcat:endDate
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| **RDF Property:** | [dct:format](http://purl.org/dc/terms/format) |
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| **RDF Property:** | [dcat:endDate](https://www.w3.org/TR/vocab-dcat-2/#Property:period_end_date) |
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|-------------------|:--------------------|
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| Constraint | *Recommended* |
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| Definition | The file format of the distribution. |
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| Range | [dct:MediaTypeOrExtent](http://purl.org/dc/terms/MediaTypeOrExtent) |
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| Domain value | [IANA-MEDIA-TYPES](https://www.iana.org/assignments/media-types/media-types.xhtml), [EUV-FT](http://publications.europa.eu/resource/authority/file-type) |
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### 8.5 Propriété : dcat:downloadURL
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| **RDF Property:** | [dcat:downloadURL](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_download_url) |
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|-------------------|:--------------------|
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| Constraint | *Optional* |
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| Definition | The URL of the downloadable file in a given format. E.g. CSV file or NetCDF file. |
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| Range | [rdfs:Resource](http://www.w3.org/2000/01/rdf-schema#Resource) |
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| Usage note | [dcat:downloadURL](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_download_url) should be used for the URL at which this distribution is available directly, typically through a HTTP Get request. |
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### 8.6 Propriété : dct:rights
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| **RDF Property:** | [dct:rights](http://purl.org/dc/terms/rights) |
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|-------------------|:--------------------|
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| Constraint | *Optional* |
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| Definition | Information about rights held in and over the distribution. |
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| Range | [dct:RightsStatement](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#terms-RightsStatement) |
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| Usage note | [dct:license](http://purl.org/dc/terms/license), which is a sub-property of dct:rights, can be used to link a distribution to a license document. However, [dct:rights](http://purl.org/dc/terms/rights) allows linking to a rights statement that can include licensing information as well as other information that supplements the license such as attribution. Information about licenses and rights should be provided on the level of Distribution. |
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### 8.7 Propriété : dcat:accessService
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| **RDF Property:** | [dcat:accessService](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_access_service) |
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|-------------------|:--------------------|
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| Constraint | *Optional* |
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| Definition | A data service that gives access to the distribution of the dataset.|
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| Range | [dcat:DataService](https://www.w3.org/TR/vocab-dcat-2/#Class:Data_Service) |
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| Usage note | [dcat:accessService](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_access_service) should be used to link to a description of a [dcat:DataService](https://www.w3.org/TR/vocab-dcat-2/#Class:Data_Service) that can provide access to this distribution. |
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### 8.8 Propriété : adms:representationTechnique
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| **RDF Property:** | [adms:representationTechnique](https://www.w3.org/TR/vocab-adms/#representation-technique) |
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|-------------------|:--------------------|
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| Constraint | *Optional* |
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| Definition | The machine-readable language in which a Distribution is expressed. |
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| Range | [skos:Concept](http://www.w3.org/2004/02/skos/core#Concept) |
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| Usage note | This property SHOULD be used to express the spatial representation type (grid, vector, tin). |
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| Domain value | [INSPIRE-SRT](https://inspire.ec.europa.eu/metadata-codelist/SpatialRepresentationType) |
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### 8.9 Propriété : dcat:packageFormat
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| Definition |The end of the period.|
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) encoded using the relevant ISO 8601 Date and Time compliant string [DATETIME](https://www.w3.org/TR/NOTE-datetime) and typed using the appropriate XML Schema datatype [XMLSCHEMA11-2](https://www.w3.org/TR/xmlschema11-2/) ([xsd:gYear](https://www.w3.org/TR/xmlschema11-2/#gYear), [xsd:gYearMonth](https://www.w3.org/TR/xmlschema11-2/#gYearMonth), [xsd:date](https://www.w3.org/TR/xmlschema11-2/#date), or [xsd:dateTime](https://www.w3.org/TR/xmlschema11-2/#dateTime)). |
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| **RDF Property:** | [dcat:packageFormat](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_packaging_format) |
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|-------------------|:--------------------|
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| Constraint | *Optional* |
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| Definition | The package format of the distribution in which one or more data files are grouped together, e.g. to enable a set of related files to be downloaded together..|
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| Range | [dct:MediaType](http://purl.org/dc/terms/MediaType) |
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| Usage note | This property is used when the files in the distribution are packaged, e.g. in a ZIP file. The format should be expressed using a media type as defined by [IANA-MEDIA-TYPES](https://www.iana.org/assignments/media-types/), if available. See also [dcat:compressFormat](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_compression_format).|
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### 8.10 Contexte et exemples en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [dcat:Distribution](http://www.w3.org/ns/dcat#Distribution)
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### 6.3 Contexte et exemples en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [dct:PeriodOfTime](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/PeriodOfTime)
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Le code source suivant montre un exemple d'instanciation d'une ressource de type [dcat:Distribution](http://www.w3.org/ns/dcat#Distribution) pour un jeux de données [Sentinel 2 niveau 1C] qui n'a pas de lien direct de téléchargement vers un fichier de distribution (pas de propriété [dcat:downloadURL](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_download_url) pour le niveau jeux de données) mais une URL qui pointe vers une ressource décrivant la distribution et donnant accès au fichier à partir d'une authentification dans le système.
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Exemple d'instanciation de l'intervalle temporel associé à la collection de données concernant [projet FLATSIM - mesure des déformations de surface terrestre -](https://gitlab.in2p3.fr/gaia-data/wp3-services/vocabulaires/dataterra_ap/dataterra_geodcatap/-/blob/main/examples/FLATSIM_interferometry/latest/flatsim_interfero_from_S1.ttl) (suivre le lien pour accéder au code source de l'exemple complet).
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```turtle
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@prefix dct: <http://purl.org/dc/terms/> .
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@prefix dcat: <http://www.w3.org/ns/dcat#> .
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@prefix dcat: <http://www.w3.org/ns/dcat#> .
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@prefix : <http://example-dataterra.org/> .
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:dataset_distribution a dcat:Distribution ; # Physical embodiment of the Dataset in a particular format.
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dcat:accessURL <https://peps.cnes.fr/rocket/#/collections/S2ST/76d8e095-ca83-5def-9a49-4a92411d7ef5> ;
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dct:description "The distribution contains metadata files, images and quicklook files. The Distribution is delivered in SAFE format"@en ;
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dct:license <https://sentinel.esa.int/documents/247904/690755/Sentinel_Data_Legal_Notice> ;
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dcat:accessService distribution_dataservice .
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:dataset_temporal a dct:PeriodOfTime ;
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dcat:startDate "2014-10-01"^^xsd:date ;
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dcat:endDate "2021-05-01"^^xsd:date .
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```
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Un deuxième exemple ci-dessous avec une [dcat:Distribution](http://www.w3.org/ns/dcat#Distribution) d'un jeux de données dans laquelle un téléchargement direct d'un fichier est disponible avec la propriété [dcat:downloadURL](https://www.w3.org/TR/vocab-dcat-2/#Property:distribution_download_url). Voir l'exemple complet de fiche du dataset [Traits de Côte à Haute Résolution](https://gitlab.in2p3.fr/gaia-data/wp3-services/vocabulaires/dataterra_ap/dataterra_geodcatap/-/blob/main/examples/tchr_shom/latest/tchr_shom.ttl) présent dans le catalogue du pôle Fom@Ter.
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Cette période temporelle peut être définit par une date de début uniquement, tel est le cas pour les jeux de données qui présentent des mesures en continue ( séries temporelles par exemple), comme dans l'exemple suivant pour la collection de l'[Atlas des trajectoires de tourbillons à méso-échèlle] :
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[Atlas des trajectoires de tourbillons à méso-échèlle]:https://gitlab.in2p3.fr/gaia-data/wp3-services/vocabulaires/dataterra_ap/dataterra_geodcatap/-/blob/main/examples/eddies_trace_nrt_dt/latest/exemple_eddies_traces_nrt_dt.ttl
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```turtle
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@prefix dct: <http://purl.org/dc/terms/> .
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@prefix dcat: <http://www.w3.org/ns/dcat#> .
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@prefix adms: <http://www.w3.org/ns/adms#> .
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@prefix : <http://example-dataterra.org/> .
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:dataset_distribution a dcat:Distribution ; # Physical embodiment of the Dataset in a particular format.
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dct:license <https://www.etalab.gouv.fr/wp-content/uploads/2017/04/ETALAB-Licence-Ouverte-v2.0.pdfLicense_URI> ;
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dct:format <http://publications.europa.eu/resource/authority/file-type/SHP>, <http://publications.europa.eu/resource/authority/file-type/GML> ;
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dcat:compressFormat <http://publications.europa.eu/resource/authority/file-type/7Z> ;
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adms:representationTechnique <https://inspire.ec.europa.eu/metadata-codelist/SpatialRepresentationType/vector> ; # This property SHOULD be used to express the spatial representation type (grid, vector, tin)
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dcat:downloadURL <https://services.data.shom.fr/INSPIRE/telechargement/prepackageGroup/TCHR_PACK_DL/prepackage/Kerguelen/file/Kerguelen.7z> ; # This property contains a URL that is a direct link to a downloadable file in a given format.
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dcat:accessService distribution_dataservice .
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:dataset_temporal_open a dct:PeriodOfTime ;
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dcat:startDate "1993-01-01T00:00:00"^^xsd:dateTime .
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# dcat:endDate "YYYY-MM-DDThh:mm:ss.s"^^xsd:dateTime ; # No endDate for open interval for data series.
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```
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## 9. Classe : dcat:DataService
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## 7. Classe : dcat:Relationship
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| **RDF Class:** | [dcat:DataService](https://www.w3.org/TR/vocab-dcat-2/#Class:Data_Service) |
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| **RDF Class:** | [dcat:Relationship](https://www.w3.org/TR/vocab-dcat-2/#Class:Relationship) |
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|--------------------|:--------------------|
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| Constraint | *Optional* |
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| Definition | A collection of operations that provides access to one or more datasets or data processing functions. |
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| Sub-class of | [dcat:Resource](https://www.w3.org/TR/vocab-dcat-2/#Class:Resource) |
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| Sub-class of | [dctype:Service](http://purl.org/dc/dcmitype/Service) |
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| Usage note | If a [dcat:DataService](http://www.w3.org/ns/dcat#DataService) is bound to one or more specified Datasets, they are indicated by the [dcat:servesDataset](https://www.w3.org/TR/vocab-dcat-2/#Property:data_service_serves_dataset) property. |
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| Constraint | *Recommended* |
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| Definition | An association class for attaching additional information to a relationship between DCAT Resources.|
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| Sub-class of | [prov:EntityInfluence](https://www.w3.org/TR/prov-o/#EntityInfluence) |
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| Usage note | Use to characterize a relationship between datasets, and potentially other resources, where the nature of the relationship is known but is not adequately characterized by the standard [DCTERMS](https://www.w3.org/TR/vocab-dcat-2/#bib-dcterms) properties ([dct:hasPart](http://purl.org/dc/terms/hasPart), [dct:isPartOf](http://purl.org/dc/terms/isPartOf), [dct:conformsTo](http://purl.org/dc/terms/conformsTo), [dct:isFormatOf](http://purl.org/dc/terms/isFormatOf), [dct:hasFormat](http://purl.org/dc/terms/hasFormat), [dct:isVersionOf](http://purl.org/dc/terms/isVersionOf), [dct:hasVersion](http://purl.org/dc/terms/hasVersion), [dct:replaces](http://purl.org/dc/terms/replaces), [dct:isReplacedBy](http://purl.org/dc/terms/isReplacedBy), [dct:references](http://purl.org/dc/terms/references), [dct:isReferencedBy](http://purl.org/dc/terms/isReferencedBy), [dct:requires](http://purl.org/dc/terms/requires), [dct:isRequiredBy](http://purl.org/dc/terms/isRequiredBy)) or [PROV-O](https://www.w3.org/TR/vocab-dcat-3/#bib-prov-o) properties ([prov:wasDerivedFrom](http://www.w3.org/TR/prov-o/#wasDerivedFrom), [prov:wasInfluencedBy](https://www.w3.org/TR/prov-o/#wasInfluencedBy), [prov:wasQuotedFrom](http://www.w3.org/TR/prov-o/#wasQuotedFrom), [prov:wasRevisionOf](https://www.w3.org/TR/prov-o/#wasRevisionOf), [prov:hadPrimarySource](https://www.w3.org/TR/prov-o/#hadPrimarySource), [prov:alternateOf](https://www.w3.org/TR/prov-o/#alternateOf), [prov:specializationOf](https://www.w3.org/TR/prov-o/#specializationOf)).|
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### 9.1 Propriété : dcat:endpointURL
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### 7.1 Propriété : dct:relation
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| **RDF Property:** | [dcat:endpointURL](https://www.w3.org/TR/vocab-dcat-2/#Property:data_service_endpoint_url) |
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| **RDF Property:** | [dct:relation](http://purl.org/dc/terms/relation) |
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|-------------------|:--------------------|
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| Constraint | *Mandatory* |
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| Definition | The root location or primary endpoint of the service (a Web-resolvable IRI). |
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| Range | [rdfs:Resource](http://www.w3.org/2000/01/rdf-schema#Resource) |
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| Constraint | *Mandatory* |
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| Definition | The resource related to the source resource. |
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| Usage note | In the context of a [dcat:Relationship](https://www.w3.org/TR/vocab-dcat-2/#Class:Relationship) this is expected to point to another [dcat:Dataset](https://www.w3.org/TR/vocab-dcat-2/#Class:Dataset) or other cataloged resource. |
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### 9.2 Propriété : dcat:servesDataset
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### 7.2 Propriété : dcat:hadRole
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| **RDF Property:** | [dcat:servesDataset](https://www.w3.org/TR/vocab-dcat-2/#Property:data_service_serves_dataset) |
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| **RDF Property:** | [dcat:hadRole](https://www.w3.org/TR/vocab-dcat-2/#Property:relationship_hadRole) |
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|-------------------|:--------------------|
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| Constraint | *Recommended* |
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| Definition | A collection of data that this data service can distribute. |
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| Range | [dcat:Dataset](https://www.w3.org/TR/vocab-dcat-2/#Class:Dataset) |
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| Constraint | *Mandatory* |
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| Definition | The function of an entity or agent with respect to another entity or resource. |
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| Domain | [dcat:Relationship](https://www.w3.org/TR/vocab-dcat-2/#Class:Relationship) |
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| Range | [dcat:Role](https://www.w3.org/TR/vocab-dcat-2/#Class:Role) |
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| Usage note | May be used in a qualified-relation to specify the role of an [prov:Entity](https://www.w3.org/TR/prov-o/#Entity) with respect to another [prov:Entity](https://www.w3.org/TR/prov-o/#Entity). It is recommended that the value be taken from a controlled vocabulary of entity roles. |
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| Domain value | [IANA-RELATIONS](https://www.iana.org/assignments/link-relations/link-relations.xhtml). |
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> **Note** : Plus de détail concernant les *Qualified relations* pour dcat : https://www.w3.org/TR/vocab-dcat-2/#qualified-forms
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### 9.3 Propriété : dct:conformsTo
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### 7.3 Contexte et exemples en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [dcat:Relationship](https://www.w3.org/TR/vocab-dcat-2/#Class:Relationship)
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| **RDF Property:** | [dct:conformsTo](http://purl.org/dc/terms/conformsTo) |
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|-------------------|:--------------------|
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| Constraint | *Recommended* |
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| Definition | An established standard to which the described resource conforms. |
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| Range | [dct:Standard](http://purl.org/dc/terms/Standard) (A basis for comparison; a reference point against which other things can be evaluated.) |
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| Usage note | This property should be used to indicate the model, schema, ontology, view or profile that the cataloged resource content conforms to. |
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| Domain value | [INSPIRE-PV](https://inspire.ec.europa.eu/metadata-codelist/ProtocolValue) |
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La classe [dcat:Relationship](https://www.w3.org/TR/vocab-dcat-2/#Class:Relationship) permets d'établir le lien entre différentes types de ressources liées au [dcat:Dataset](https://www.w3.org/TR/vocab-dcat-2/#Class:Dataset). La liste suivante montre des exemples pour les ressources identifiés dans le contexte des données Data Terra, pour des ressources tels que des jeux de données :
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### 9.4 Propriété : dct:title
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> **Note** : cet exemple doit se transformer en exemple de propriété landingPage pour le dcat:Dataset !!!
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> + Ressource : fiche de métadonnées en provenance du catalogue du pôle Odatis, également appelée fiche d'origine.
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| **RDF Property:** | [dct:title](http://purl.org/dc/terms/title) |
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|-------------------|:--------------------|
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| Constraint | *Recommended* |
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| Definition | This property contains a name given to the Data Service. |
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) |
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|
```turtle
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@prefix dct: <http://purl.org/dc/terms/> .
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@prefix dcat: <http://www.w3.org/ns/dcat#> .
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@prefix : <http://example-dataterra.org/> .
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### 9.5 Propriété : dcat:endpointDescription
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:relation_source_metadata a dcat:Relationship ; # Relation for metadata from source catalog
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dct:relation <https://www.odatis-ocean.fr/en/data-and-services/data-access/direct-access-to-the-data-catalogue#/metadata/387879ca-24b7-4bbf-a551-33356dc76656> ;
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dcat:hadRole <http://www.iana.org/assignments/relation/original> .
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```
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| **RDF Property:** | [dcat:endpointDescription](https://www.w3.org/TR/vocab-dcat-2/#Property:data_service_endpoint_description) |
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|-------------------|:--------------------|
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| Constraint | *Recommended* |
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| Definition | A description of the services available via the end-points, including their operations, parameters etc. |
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| Range | [rdfs:Resource](http://www.w3.org/2000/01/rdf-schema#Resource) |
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| Usage note | The endpoint description gives specific details of the actual endpoint instances, while [dct:conformsTo](http://purl.org/dc/terms/conformsTo) is used to indicate the general standard or specification that the endpoints implement. |
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| Usage note | An endpoint description may be expressed in a machine-readable form, such as an OpenAPI (Swagger) description [OpenAPI](https://www.w3.org/TR/vocab-dcat-2/#bib-openapi), an OGC GetCapabilities response [WFS](https://www.w3.org/TR/vocab-dcat-2/#bib-wfs), [ISO-19142](https://www.w3.org/TR/vocab-dcat-2/#bib-iso-19142), [WMS](https://www.w3.org/TR/vocab-dcat-2/#bib-wms), [ISO-19128](https://www.w3.org/TR/vocab-dcat-2/#bib-iso-19128), a SPARQL Service Description [SPARQL11-SERVICE-DESCRIPTION](https://www.w3.org/TR/vocab-dcat-2/#bib-sparql11-service-description), an [OpenSearch](https://www.w3.org/TR/vocab-dcat-2/#bib-opensearch) or [WSDL20](https://www.w3.org/TR/vocab-dcat-2/#bib-wsdl20) document, a Hydra API description [HYDRA](https://www.w3.org/TR/vocab-dcat-2/#bib-hydra), else in text or some other informal mode if a formal representation is not possible. |
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|
|
+ Ressource : chaque jeux de données composant de la collection Atlas, à savoir les trajectoires de tourbillons en NRT (Near Real Time) et DT (Delayed Time).
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|
|
### 9.6 Contexte et exemples en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [dcat:DataService](http://www.w3.org/ns/dcat#DataService)
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|
|
```turtle
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|
|
@prefix dct: <http://purl.org/dc/terms/> .
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|
|
@prefix dcat: <http://www.w3.org/ns/dcat#> .
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|
|
@prefix : <http://example-dataterra.org/> .
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|
Le code source d'exemple ci-dessous décrit une ressource de type [dcat:DataService](https://www.w3.org/TR/vocab-dcat-2/#Class:Data_Service) pour le service de traitement sous protocole OGC-WPS (Web Processing Service) mis à disposition par le service [PEPS](https://peps.cnes.fr) pour un jeux de données [Sentinel 2 niveau 1C] (suivre le lien pour accéder au code source de l'exemple complet).
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:relation_dataset_nrt a dcat:Relationship ; # Relation for Near Real Time dataset
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|
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dct:relation :Mesoscale_eddy_trajectory_nrt_product ;
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|
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dcat:hadRole <http://www.iana.org/assignments/relation/item> .
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:relation_dataset_dt a dcat:Relationship # Relation for Delayed Time dataset
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|
|
dct:relation :Mesoscale_eddy_trajectory_dt_product ;
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|
|
dcat:hadRole <http://www.iana.org/assignments/relation/item> .
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|
|
```
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|
A noter que dans la définition des datasets pour les items (NRT et DT), la même classe [dcat:Relationship](https://www.w3.org/TR/vocab-dcat-2/#Class:Relationship) sera utilisé pour mettre en relation ces datasets et la collection, cette fois fois-ci le rôle ([dcat:hadRole](https://www.w3.org/TR/vocab-dcat-2/#Property:relationship_hadRole)) à mettre en place est le pointeur vers la collection, comme dans l'exemple qui suit :
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|
```turtle
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|
|
@prefix dct: <http://purl.org/dc/terms/> .
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|
|
@prefix dcat: <http://www.w3.org/ns/dcat#> .
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|
|
@prefix dcat: <http://www.w3.org/ns/dcat#> .
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|
|
@prefix : <http://example-dataterra.org/> .
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|
|
:distribution_dataservice a dcat:DataService ;
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|
|
dct:title "Web Processing Service (WPS) for satellite image treatment from PEPS."@en ;
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|
|
dct:description "An online, on-demand standard processing service for Sentinel1 and Sentinel2 images."@en ;
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|
|
dcat:endpointURL <https://peps.cnes.fr/resto/wps?service=WPS> ;
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|
|
dct:conformsTo <http://www.opengeospatial.org/standards/wps> ;
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|
|
dcat:servesDataset :S2A_MSIL1C_20200709T105031_N0209_R051_T31TCJ_20200709T125257.SAFE ;
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|
|
dcat:endpointDescription <https://peps.cnes.fr/resto/wps?service=WPS&request=GetCapabilities&version=1.0.0> .
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|
|
:relation_dataset_atlas a dcat:Relationship ; # Relation for Atlas dataset collection
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|
|
dct:relation :Mesoscale_eddy_trajectory_atlas_product ;
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|
|
dcat:hadRole <http://www.iana.org/assignments/relation/collection> .
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|
|
```
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|
|
## 10. Classe : dct:LicenseDocument
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|
|
+ Ressource : publications liés aux jeux de données identifiés par leur DOI (dans le détail : les papiers [META3.1exp: A new Global Mesoscale Eddy Trajectories Atlas derived from altimetry](https://doi.org/10.5194/essd-2021-300) et [A New Sea Surface Height–Based Code for Oceanic Mesoscale Eddy Tracking](https://doi.org/10.1175/JTECH-D-14-00019.1)). Les 2 ressources sont identifiés comme ayant le rôle [publication](http://www.iana.org/assignments/relation/publication) à partir du vocabulaire contrôlé proposé.
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|
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|
|
|
```turtle
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|
|
@prefix dct: <http://purl.org/dc/terms/> .
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|
|
@prefix dcat: <http://www.w3.org/ns/dcat#> .
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|
|
@prefix : <http://example-dataterra.org/> .
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|
|
:relation_documents a dcat:Relationship ; # Relation for bibliographic references
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|
|
dct:relation <https://doi.org/10.5194/essd-2021-300>, <https://doi.org/10.1175/JTECH-D-14-00019.1> ;
|
|
|
dcat:hadRole <http://www.iana.org/assignments/relation/publication> .
|
|
|
```
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|
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|
|
Pour aller plus loin dans cet exemple, voici le lien vers le code source concernant les métadonnées de l'[Atlas des trajectoires de tourbillons à méso-échèlle].
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|
|
## 8. Classe : dct:LicenseDocument
|
|
|
|
|
|
| **RDF Class:** | [dct:LicenseDocument](http://purl.org/dc/terms/LicenseDocument) |
|
|
|
|--------------------|:--------------------|
|
... | ... | @@ -827,7 +705,7 @@ Le code source d'exemple ci-dessous décrit une ressource de type [dcat:DataServ |
|
|
| Definition | A legal document giving official permission to do something with a resource. |
|
|
|
| Sub-class of | [dct:RightsStatement ](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#RightsStatement) |
|
|
|
|
|
|
### 10.1 Propriété : dct:type (license type)
|
|
|
### 8.1 Propriété : dct:type (license type)
|
|
|
|
|
|
| **RDF Property:** | [dct:type](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/type) |
|
|
|
|-------------------|:--------------------|
|
... | ... | @@ -837,7 +715,7 @@ Le code source d'exemple ci-dessous décrit une ressource de type [dcat:DataServ |
|
|
| Usage note | This property refers to a type of licence, e.g. indicating ‘public domain’ or ‘royalties required’. |
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|
|
### 10.2 Propriété : rdfs:label (license text)
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|
|
### 8.2 Propriété : rdfs:label (license text)
|
|
|
|
|
|
| **RDF Property:** | [rdfs:label](https://www.w3.org/TR/rdf-schema/#ch_label) |
|
|
|
|-------------------|:--------------------|
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... | ... | @@ -846,7 +724,7 @@ Le code source d'exemple ci-dessous décrit une ressource de type [dcat:DataServ |
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) |
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| Usage note | This property contains the text of the Licence Document. |
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### 10.3 Contexte et exemples en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [dct:LicenseDocument](http://purl.org/dc/terms/LicenseDocument)
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### 8.3 Contexte et exemples en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [dct:LicenseDocument](http://purl.org/dc/terms/LicenseDocument)
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Dans le contexte du catalogue fédéré, les ressources du type [dct:LicenseDocument](http://purl.org/dc/terms/LicenseDocument) sont associés ou bien au niveau des [dcat:Distribution](http://www.w3.org/ns/dcat#Distribution) ou bien des [dcat:DataService](http://www.w3.org/ns/dcat#DataService). Dans les duex cas, c'est la propriété [dct:license](http://purl.org/dc/terms/license) qui fait le lien.
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... | ... | @@ -875,6 +753,124 @@ A continuation, deux exemples distincts de licence de distribution de données : |
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```
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> **Note** : quelles licences encourager ? Creative Commons licences [CC](https://creativecommons.org/about/cclicenses/) : en particulier CC Zero Public Domain Dedication [CC0](https://creativecommons.org/publicdomain/zero/1.0/) ou CC-BY Attribution 4.0 International [CC-BY](https://creativecommons.org/licenses/by/4.0/).
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## 9. Classe : dct:RightsStatement
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> **Note**: DCAT identifie 3 scénarios pour les licences et droits d'accès ou d'utilisation : les ressources de type licences avec [dct:license](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/license), les ressources concernant les droits d'accès et d'utilisation avec [dct:accessRights](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/accessRights), et tous les autres cas, notamment les cas de déclaration de copyright ou droits d'auteurs avec [dct:rights](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/rights).
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| **RDF Class:** | [dct:RightsStatement](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/RightsStatement) |
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|--------------------|:--------------------|
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| Constraint | *Mandatory* |
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| Definition | A statement about the intellectual property rights (IPR) held in or over a resource, a legal document giving official permission to do something with a resource, or a statement about access rights. |
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| Usage note | Information about licenses and rights may be provided for the Resource. |
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### 9.1 Propriété : rdfs:label (rights statement text)
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| **RDF Property:** | [rdfs:label](https://www.w3.org/TR/rdf-schema/#ch_label) |
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|-------------------|:--------------------|
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| Constraint | *Recommended* |
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| Definition | A human readable label for a resource. |
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| Domain | [rdfs:Resource](http://www.w3.org/2000/01/rdf-schema#Resource) |
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) |
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| Usage note | This property contains the text of the Rights Statement. Multilingual labels are supported using the language tagging facility of RDF literals. |
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### 9.2 Contexte et exemples en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [dct:RightsStatement](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/RightsStatement)
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Exemple d'instance pour les droits d'utilisation concernant le jeux de données des [Traits de Côte à Haute Résolution] présent dans le catalogue du pôle Fom@Ter.
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```turtle
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@prefix dct: <http://purl.org/dc/terms/> .
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@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
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@prefix : <http://example-dataterra.org/> .
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:dataset_right a dct:RightsStatement ; # Citation constraints for dataset
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rdfs:label "Do not use for navigation.The product is not designed for use at scales of more than 1:3 000 in mainland France and 1:20 000 in Kerguelen. The High Resolution Coastline file can be freely used in the integrated databases or services, under the following conditions: - explicit mention of the source by indicating ©Shom 2016. http://dx.doi.org/10.17183/TCHR when displayed, - clear indication to the user of any restrictions which apply to data, - website references must show the Shom logo and a link to the Shom website www.shom.fr. The high resolution coastline was not designed for use in the operation of nuclear facilities, air navigation or communications systems, navigation or air traffic control systems, or any other area referred to as hazardous activities, where a failure of the product could result in death, personal injury or serious physical or environmental damage. In general, in metropolitan France the planimetric accuracy is better than 5 m (uncertainty of the source data, bathymetric lidar or OrtholittoralV2). On certain particular areas (absence of the two previous sources), as well as on all the archipelago of Kerguelen, the precision can reach a few tens of meters. The High Resolution Coastline file can be freely used in the integrated databases or services, under the following conditions: - explicit mention of the source by indicating ©Shom 2016. http://dx.doi.org/10.17183/TCHR when displayed, - clear indication to the user of any restrictions which apply to data, - website references must show the Shom logo and a link to the Shom website www.shom.fr. The product is distributed under an Opendata license (version 2.0, April 2017), defined by the Etalab mission. No public access restrictions."@en .
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```
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[Traits de Côte à Haute Résolution]:https://gitlab.in2p3.fr/gaia-data/wp3-services/vocabulaires/dataterra_ap/dataterra_geodcatap/-/blob/main/examples/tchr_shom/latest/tchr_shom.ttl
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## 10. Classe : dcat:CatalogRecord
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| **RDF Class:** | [dcat:CatalogRecord](https://www.w3.org/TR/vocab-dcat-2/#Class:Catalog_Record) |
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|--------------------|:--------------------|
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| Constraint | *Mandatory* |
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| Definition | A record in a catalog, describing the registration of a single [dcat:Resource](https://www.w3.org/TR/vocab-dcat-2/#Class:Resource). |
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| Usage note | *It exists for catalogs where a distinction is made between metadata about a dataset or service and metadata about the entry in the catalog about the dataset or service. For example, the publication date property of the dataset reflects the date when the information was originally made available by the publishing agency, while the publication date of the catalog record is the date when the dataset was added to the catalog.* |
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| See also | *[ Classe : dcat:Dataset ](https://www.w3.org/TR/vocab-dcat-2/#Class:Dataset)* |
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### 10.1 Propriété : foaf:primaryTopic
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| **RDF Property:** | [foaf:primaryTopic](http://xmlns.com/foaf/0.1/#term_primaryTopic) |
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|--------------------|:--------------------|
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| Constraint | *Mandatory* |
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| Definition | A link to the Dataset, Data service or Catalog described in the record.|
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| Range | [dcat:Resource](https://www.w3.org/TR/vocab-dcat-2/#Class:Resource) |
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| Usage note | [foaf:primaryTopic](http://xmlns.com/foaf/0.1/#term_primaryTopic) property is functional: each catalog record can have at most one primary topic (cardinality =1)i.e. describes one dataset or service. |
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### 10.2 Propriété : dct:modified
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| **RDF Property:** | [dct:modified](http://purl.org/dc/terms/modified) |
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|--------------------|:--------------------|
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| Constraint | *Mandatory* |
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| Definition | Most recent date on which the catalog entry was changed, updated or modified. |
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) encoded using the relevant ISO 8601 Date and Time compliant string [DATETIME](https://www.w3.org/TR/NOTE-datetime) and typed using the appropriate XML Schema datatype [XMLSCHEMA11-2](https://www.w3.org/TR/xmlschema11-2/) ([xsd:gYear](https://www.w3.org/TR/xmlschema11-2/#gYear), [xsd:gYearMonth](https://www.w3.org/TR/xmlschema11-2/#gYearMonth), [xsd:date](https://www.w3.org/TR/xmlschema11-2/#date), or [xsd:dateTime](https://www.w3.org/TR/xmlschema11-2/#dateTime)). |
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| Usage note | [foaf:primaryTopic](http://xmlns.com/foaf/0.1/#term_primaryTopic) property is functional: each catalog record can have at most one primary topic i.e. describes one dataset or service. |
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### 10.3 Propriété : dct:conformsTo (application profile)
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| **RDF Property:** | [dct:conformsTo](http://purl.org/dc/terms/conformsTo) |
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|--------------------|:--------------------|
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| Constraint | *Recommended* |
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| Definition | An established standard to which the described resource conforms. |
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| Range | [dct:Standard](http://purl.org/dc/terms/Standard) (A basis for comparison; a reference point against which other things can be evaluated.) |
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| Usage note | This property should be used to indicate the model, schema, ontology, view or profile that the catalog record metadata conforms to. |
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### 10.4 Propriété : dct:identifier
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| **RDF Property:** | [dct:identifier](https://www.w3.org/TR/vocab-dcat-2/#Property:resource_identifier) |
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|--------------------|:--------------------|
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| Constraint | *Recommended* |
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| Definition | A unique identifier for the Catalogue Record. |
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) |
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| Usage note | The identifier might be used as part of the URI of the item, but still having it represented explicitly is useful. |
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### 10.5 Propriété : dct:created
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| **RDF Property:** | [dct:created](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/terms/created) |
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|--------------------|:--------------------|
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| Constraint | *Optional* |
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| Definition | Date of creation of the Catalog Record. |
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| Range | [rdfs:Literal](http://www.w3.org/2000/01/rdf-schema#Literal) typed as [xsd:date](https://www.w3.org/TR/xmlschema11-2/#date) or [xsd:dateTime](https://www.w3.org/TR/xmlschema11-2/#dateTime)|
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| Usage note | This property contains the date on which the Catalogue Record has been first created. |
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### 10.6 Propriété : dct:language
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| **RDF Property:** | [dct:language](https://www.w3.org/TR/vocab-dcat-2/#Property:resource_language) |
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|--------------------|:--------------------|
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| Constraint | *Optional* |
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| Definition | The language of the resource. |
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| Range | [dct:LinguisticSystem](http://purl.org/dc/terms/LinguisticSystem) |
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| Usage note | This property refers to a language used in the textual metadata describing titles, descriptions, etc. of the Catalog Record. This property can be repeated if the metadata is provided in multiple languages. |
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### 10.7 Contexte et exemple en [RDF 1.1 Turtle](https://www.w3.org/TR/turtle/) de la classe [dcat:CatalogRecord](https://www.w3.org/TR/vocab-dcat-2/#Class:Catalog_Record).
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> **Note** : contexte Data Terra à compléter (https://docs.google.com/presentation/d/1fV68l9r9JjEJ0b1mwhQrKhxqa-BdNChxd58p3aDDu5g/edit#slide=id.g1ad07726d6f_2_61).
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Dans le contexte du catalogue fédéré la classe [dcat:CatalogRecord](https://www.w3.org/TR/vocab-dcat-2/#Class:Catalog_Record) est celle qui permets le lien de premier niveau au moment d'une recherche (à partir d'une IHM ou d'une API) dont le but est la découverte de jeux de données.
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> **Note** : exemple à revoir !!!
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```turtle
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@prefix dct: <http://purl.org/dc/terms/> .
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@prefix dcat: <http://www.w3.org/ns/dcat#> .
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@prefix foaf <http://xmlns.com/foaf/0.1/> .
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@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
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@prefix : <http://example-dataterra.org/> .
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:data_terra_catalog_record a dcat:CatalogRecord ;
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foaf:primaryTopic :data_terra_dataset ;
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dct:modified "2020-03-25"^^xsd:date ;
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dct:identifier "af4c4fd6-0485-45c8-b6bc-8a8ed12aa3eb"^^xsd:string .
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```
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## Extensions du profil d'application Data Terra
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... | ... | |