DQL (Doctrine Query Language) is a object query language which allows you to find objects. DQL understands things like object relationships, polymorphism and inheritance (including column aggregation inheritance). <br \><br \> So instead of writing lots of SQL inner and outer joins, unions and subselects yourself, you can write simple DQL queries where relationships are being referenced with dot-notation. <br \><br \>
You can execute DQL queries with Doctrine_Connection::query() method.
