What is the difference between Sessions Beans and Message Drivebeans?

Question

There are two components responsible for business logic in the EJB architecture, the Session Beans and Message Drivebeans. I would like to know the difference of both and some example of their use.

Answer 1

While MDB is stateless, SB can be stateless or statfull and MDB can be short-lived and access messages asynchronously. Also you cannot access the MDB via an interface.