I don't know how far I am right in the following topics.
In EJB2.0, we have concept BMP and CMP. But as per my understanding on EJB3.0,
the concept is dropped and all the entity beans are nothing but CMP.
Am I right?
posted 7 years ago
You are correct, with the exception that JPA supports something called native queries. If you want, you can still use EJB 2.x Entity Beans though. All EJB 3.0 implementations are guaranteed to be backwards compatible.
Independent Consultant — Author, EJB 3 in Action — Expert Group Member, Java EE 6 and EJB 3.1