mirror of
https://github.com/nextcloud/documentation.git
synced 2026-01-04 02:36:49 +07:00
57 lines
1.8 KiB
ReStructuredText
57 lines
1.8 KiB
ReStructuredText
============================
|
|
Database schema (deprecated)
|
|
============================
|
|
|
|
.. warning:: Using the database.xml schema file is deprecated.
|
|
You should migrate to using :ref:`Database Migrations <app_db_migrations>`.
|
|
|
|
.. sectionauthor:: Bernhard Posselt <dev@bernhard-posselt.com>
|
|
|
|
Nextcloud uses a database abstraction layer on top of either PDO, depending on the availability of PDO on the server.
|
|
|
|
The database schema is inside :file:`appinfo/database.xml` in MDB2's `XML scheme notation <http://www.wiltonhotel.com/_ext/pear/docs/MDB2/docs/xml_schema_documentation.html>`_ where the placeholders \*dbprefix* (\*PREFIX* in your SQL) and \*dbname* can be used for the configured database table prefix and database name.
|
|
|
|
An example database XML file would look like this:
|
|
|
|
.. code-block:: xml
|
|
|
|
<?xml version="1.0" encoding="UTF-8" ?>
|
|
<database>
|
|
<name>*dbname*</name>
|
|
<create>true</create>
|
|
<overwrite>false</overwrite>
|
|
<charset>utf8</charset>
|
|
<table>
|
|
<name>*dbprefix*yourapp_items</name>
|
|
<declaration>
|
|
<field>
|
|
<name>id</name>
|
|
<type>integer</type>
|
|
<default>0</default>
|
|
<notnull>true</notnull>
|
|
<autoincrement>1</autoincrement>
|
|
<length>4</length>
|
|
</field>
|
|
<field>
|
|
<name>user</name>
|
|
<type>text</type>
|
|
<notnull>true</notnull>
|
|
<length>64</length>
|
|
</field>
|
|
<field>
|
|
<name>name</name>
|
|
<type>text</type>
|
|
<notnull>true</notnull>
|
|
<length>100</length>
|
|
</field>
|
|
<field>
|
|
<name>path</name>
|
|
<type>clob</type>
|
|
<notnull>true</notnull>
|
|
</field>
|
|
</declaration>
|
|
</table>
|
|
</database>
|
|
|
|
To update the tables used by the app, simply adjust the database.xml file and increase the app version number in :file:`appinfo/info.xml` to trigger an update.
|