Doctrine ORM 3 reference for database object-relational mapping with PHP and Symfony. Use when working with entities, repositories, QueryBuilder, DQL, associations, lifecycle events, migrations, fixtures, custom types, or any Doctrine ORM-related code. Triggers on: Doctrine ORM, Entity, Repository, QueryBuilder, DQL, EntityManager, OneToOne, OneToMany, ManyToOne, ManyToMany, lifecycle callbacks, PrePersist, PostPersist, PreUpdate, PostUpdate, migrations, fixtures, UnitOfWork, flush, persist, EntityRepository, findBy, findOneBy, custom repository methods, Criteria, associations, eager loading, lazy loading, fetch joins, batch processing.