Doctrine PHP5 Database ORM pear.doctrine-project.org Doctrine is an ORM (object relational mapper) for PHP 5.2.x+ that sits on top of a powerful DBAL (database abstraction layer). One of its key features is the ability to optionally write database queries in an OO (object oriented) SQL-dialect called DQL inspired by Hibernates HQL. This provides developers with a powerful alternative to SQL that maintains a maximum of flexibility without requiring needless code duplication. LGPL -