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Field domain documentation #10534

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Field domain documentation
hefniraera Dec 8, 2025
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hefniraera Dec 18, 2025
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7 changes: 7 additions & 0 deletions docs/user_manual/introduction/browser.rst
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Expand Up @@ -298,6 +298,8 @@ each level of the dataset tree.
| | :menuselection:`New Field Domain --> | | | | | | |
| | New Glob Domain` | |checkbox| | | | | | |
| +--------------------------------------------+--------------+--------------+------------+------------+---------------+------------+
| | :guilabel:`New Relationship...` | |checkbox| | | | | | |
| +--------------------------------------------+--------------+--------------+------------+------------+---------------+------------+
| | :guilabel:`Delete <database_name>` | |checkbox| | |checkbox| | | | | |
| +--------------------------------------------+--------------+--------------+------------+------------+---------------+------------+
| | :guilabel:`Compact Database (VACUUM)` | |checkbox| | | | | | |
Expand Down Expand Up @@ -405,6 +407,7 @@ each level of the dataset tree.
(such as those defined in a GeoPackage or ESRI File Geodatabase) are automatically
detected. These domains are database-level constraints, meaning they are enforced
by the database itself and apply across different applications, not just QGIS.
You can edit and delete these domains by right-clicking on the field domain entry.

Importing vector layers into databases using Browser panel
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Expand Down Expand Up @@ -651,6 +654,10 @@ Supported file types
:width: 1.5em
.. |stac| image:: /static/common/mIconStac.png
:width: 1.5em
.. |symbologyAdd| image:: /static/common/symbologyAdd.png
:width: 1.5em
.. |symbologyRemove| image:: /static/common/symbologyRemove.png
:width: 1.5em
.. |tiledSceneLayer| image:: /static/common/mIconTiledSceneLayer.png
:width: 1.5em
.. |unchecked| image:: /static/common/unchecked.png
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49 changes: 49 additions & 0 deletions docs/user_manual/managing_data_source/supported_data.rst
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Expand Up @@ -653,6 +653,51 @@ selecting the columns in the :guilabel:`Feature id` column. For best
performance, the :guilabel:`Feature id` value should be a single ``INTEGER``
column.


.. index:: Field domain
.. _field_domain:

Field domain
-------------

Field domains are rules that define acceptable values for a field in a database table.
This is applicable when working with data sources that support field domains,
such as GeoPackage and OpenfileGDB.
The following options are available:

* :guilabel:`New Range Domain...`: create a new range domain to restrict field values
to a specified numeric range.
* :guilabel:`New Coded Values Domain...`: create a new coded values domain to
restrict field values to a predefined list of acceptable values.
* :guilabel:`New Glob Domain...`: create a new glob domain to restrict field values
based on pattern matching using wildcard characters.

More details on each selected option are provided below:

* :guilabel:`Name`: set the name of the new field domain.
* :guilabel:`Description`: provide a description for the new field domain.
* :guilabel:`Field type`: select the data type of the field domain
(e.g., Boolean, Text, Integer, Decimal).
* Here are two available :guilabel:`Policies`:

* :guilabel:`Split policy`
* :guilabel:`Merge policy`

* Under :guilabel:`Range`, you can set the following options:

* :guilabel:`Minimum`: set the minimum acceptable value for the field.
* :guilabel:`Maximum`: set the maximum acceptable value for the field.
* Check the |checkbox| :guilabel:`Inclusive` if you want to include the boundary values in the acceptable range.

* :guilabel:`Values`: click the |symbologyAdd| :sup:`Add row` or |symbologyRemove| :sup:`Remove row` to manage
the list of acceptable values for the field.
* :guilabel:`Pattern`: define the :guilabel:`Glob pattern` using wildcard characters
(e.g., `*` for any sequence of characters, `?` for a single character).

Update and delete field domains by selecting the desired domain from the list and
right-clicking to access the context menu options.


.. index:: PostgreSQL; PostGIS; ST_Shift_Longitude

Layers crossing 180° longitude
Expand Down Expand Up @@ -723,3 +768,7 @@ and a -180..180° representation of a 0..360° data.
:width: 1em
.. |setProjection| image:: /static/common/mActionSetProjection.png
:width: 1.5em
.. |symbologyAdd| image:: /static/common/symbologyAdd.png
:width: 1.5em
.. |symbologyRemove| image:: /static/common/symbologyRemove.png
:width: 1.5em