can anyone explain what are Entity,Session and

[qute_boy_2004]

can anyone explain what are Entity,Session and

[java_programmer]

Entity is used for storage access... Statefull / Stateless Sessions contain / execute a activity or business process..MDBs handle inbound messages... Example: JMS message is sent from a Web Server application requesting account details for a user from the backend host, a MDB is triggered on the inbound traffic, MDB calls up the Session EJB Customer account details service, Session calls a collection of security / role access, web services, jdbc and / or entity beans to grab the data, MDB mediates the reply and responds to the reply queue.In my souces I've included a link to a book on this subject.

www.redbooks.ibm.com