Container-managed persistent Enterprise JavaBeans (EJBs) are one of the most widely used Java 2 Enterprise Edition (J2EE) components. The significance of Container-Managed Persistence (CMP) beans has become manifold in the J2EE world since the introduction of EJB 2.0 and the support for container-managed relations. JBoss 3.x comes with a pluggable CMP engine that supports almost all features of CMP 2.0. In this chapter, you’ll look at the JBoss CMP 2.0 implementation.
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