Session Facade: The most widely used parttern in all EJB Design Patterns, Session Facade shows how appropriate to separate business logics in your system, minimize coupling between Client and Server, forced a user action (use CASES) Performing in a network response and within a transaction. Message Facede: Message Facade discusses how to separate business logic in an asynchronous user action (Use Cases). EJB Command: One and Session Facade mode, EJB Command Partter advocates putting the placed business logic in a lightweight simple Java Command Beans, this mode is the main benefit to make the client to decouple from the EJB.
