Database FAQ

Note: This article is a work in progress. Please use the page comments or an appropriate moodle.org forum for any recommendations/suggestions for improvement.

Databases and Moodle

When talking about Moodle and databases there are actually two different kind of things which can be meant:

a) The Moodle activity named Database

b) The database on your server where Moodle stores all its content

a) Database module (activity)

See

• Database module
• Database module FAQ
• Database module forum

b) Moodle database

See

• Development:Database Schema - The files available here are in DBDesigner 4 format. DBDesigner 4 is a schema drawing program for MySQL data bases released under GPL.
• Development:Database schema introduction
• Create Moodle site database
• "Database abstraction layers and Moodle" from Christopher Douce's blog (Open University)
• "Moodle database design issues I'd like to tackle/see tackled" in the Moodle forum (from 2007).

XMLDB

XMLDB stores the database definition in an XML format that can be used to install Moodle on any database.

• Development:XMLDB Documentation
• Category:XMLDB
• XMLDB editor
• Coding#Database structures

Different kinds of databases

• MySQL
• MSSQL, see Installing MSSQL for PHP
• Oracle, see Installing Oracle for PHP
• PostgreSQL

New database layer in Moodle 2.0

• See Development:DB_layer_2.0.
• For new features in Moodle 2.0 see Development:Coding#Database.

See also:

• Category:Database