The Architecture of Enterprise JavaBeans

In chapter 2 we indicated that Enterprise JavaBeans (EJB) is a component of the Java-2 platform, Enterprise Edition (for details see [26]). In this model EJB takes over the part of the server-side application logic that is available in the form of components: the Enterprise Beans. This chapter introduces the architecture of Enterprise JavaBeans. Figure 3-1 shows Enterprise Beans (in their incarnations as entity,message-driven,and session beans) as the central elements.