Benjamin Eberlei
68436fee75
[DDC-1654] Add support for orphanRemoval on ManyToMany associations. This only makes sense when ManyToMany is used as uni-directional OneToMany association with join table. The join column has a unique constraint on it to enforce this on the DB level, but we dont validate that this actually happens. Foreign Key constraints help prevent issues and notify developers early if they use it wrong.
Doctrine 2 ORM
Doctrine 2 is an object-relational mapper (ORM) for PHP 5.3.2+ that provides transparent persistence for PHP objects. It sits on top of a powerful database abstraction layer (DBAL). One of its key features is the option to write database queries in a proprietary object oriented SQL dialect called Doctrine Query Language (DQL), inspired by Hibernates HQL. This provides developers with a powerful alternative to SQL that maintains flexibility without requiring unnecessary code duplication.
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