.. include:: hyperlinks.txt

.. note::
    Name of fields in a source are the ``fieldname`` used in
    the database. There are exceptions when the same fieldname
    appears in several database tables, *e.g* *code* or *category*.
    In that case the name is equal to ``tablename_fieldname``, *e.g*
    ``people_categories_category`` or ``people_categories_code``.

Nine sources have been defined:

* *items*
    contains items belonging to the selected event. All information
    is available (see :ref:`source-items`).

* *items per year*
    contains active items belonging to the selected event on a year basis.
    Therefore, an item appears several time when it is active during
    several years. All information is available (see :ref:`source-items-year`).

* *items small*
    contains items belonging to the selected event.
    The minimal set of information is available namely those of the *user
    data block* (see :ref:`source-items-small`).

* *items small per year*
    contains active items belonging to the selected event on a year basis.
    Therefore, an item appears several time when it is active during
    several years. The minimal set of information is available namely those of
    the *user data block* (see :ref:`source-items-small-year`).

* *object like*
    contains items belonging to the selected event.
    The information is focused on the object (see :ref:`source-object`).

* *object like per year*
    contains active items belonging to the selected event on a year basis.
    Therefore, an item appears several time when it is active during
    several years. The information is focused on the object
    (see :ref:`source-object-year`).

* *people like*
    contains items belonging to the selected event.
    The information is focused on the people (see :ref:`source-people`).

* *people like per year*
    contains active items belonging to the selected event on a year basis.
    Therefore, an item appears several time when it is active during
    several years. The information is focused on the people
    (see :ref:`source-people-year`).

* *people per year*
    contains active items belonging to the selected event on a year basis.
    Therefore, an item appears several time when it is active during
    several years. The information is focused on the people and contains
    *computed fields* (see :ref:`source-people-year-computed`).