EJB 2.1 Entity beans vs. EJB 3.0 Entity beans?

The entities managed by EJB3/JPA are not EJBs, they're just POJOs. The entities in EJB 1/2, however, are EJBs, with strict restrictions on their hierarchy.

The entities managed by EJB3/JPA are not EJBs, they're just POJOs. The entities in EJB 1/2, however, are EJBs, with strict restrictions on their hierarchy. EJB2-style entities are now completely redundant, they're only supported in EJB3 containers for backwards compatibility.

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