A great resource for Sybase database users. More info

A great resource featuring the most common MySQL commands. More info

The MySQL cheat sheet is designed to act as a reminder and reference sheet, listing useful information about MySQL. It includes a list of the available functions in MySQL, as well as data types. It also includes a list of MySQL functions available in PHP, and a list of useful sample queries to select data from a database. More info

SQL reference library of functions organised into an neat directory structure. More info

The PostgreSQL Global Development Group is a community of companies and people co-operating to drive the development of PostgreSQL, the worlds most advanced Open Source database software. More info

codewalkers.com is a web site aimed at teaching the masses about PHP and mySQL. More info