Hi Mou Haj !
Download the redbook WebSphere V3.5 Handbook number SG24-6161-00 from this book Chapter 11. Enterprise
Java Services
NB! Don't miss the Access Beans when you are getting used to this you find out EJB's is
just a step on the road.
Enterprise JavaBeans (EJB) allow developers to focus on writing the
business logic necessary to support their applications without having to deal
with the intricacies of the underlying middleware.
EJB containers insulate the enterprise beans from the underlying EJB server
and provide a standard application programming interface (API) between the
beans and the container. The EJB Specification defines this API. The EJB
container provide crucial services such as transactions, security, naming, and
persistence.
Enterprise Java Services (EJS) is the WebSphere component that allows the
deployment and management of Enterprise JavaBeans in EJB containers.
In this chapter we discuss:
• How to prepare WebSphere so that you can deploy your EJBs.
• How to deploy your EJBs into a WebSphere container.
• Some example EJBs that explore key behaviors you will see when your
EJBs execute in WebSphere.
• EJB security.
We will not discuss how to develop EJBs or EJB clients. This is beyond the
scope of this redbook. For detailed information, refer to Developing
Enterprise JavaBeans with VisualAge for Java, SG24-5429 and Design and
Implement
Servlets, JSPs, and EJBs for IBM WebSphere Application Server,
SG24-5754.
regards Tom Stevns Nielsen