Interview Questions on Enterprise Java Beans(EJB)
How EJB evolved over the years? What are Entity Bean and Session Bean? How is container managed entity bean created? What is the d...
Showing posts with label EJB. Show all posts
Showing posts with label EJB. Show all posts
What's difference between Servlet/JSP session and EJB session?
From a logical point of view, a Servlet/JSP session is similar to an EJB session. Using a session, in fact, a client can connect to a server...
What is Connection Pooling? Is it advantageous?
An EJB container provides the service of connection pooling in order to provide efficient way of database connectivity to its concurrent and...
What are the services provided by the EJB container ?
The container provides following services: -Transaction Management -Persistence -Security -Connection Pooling -Naming services
What is the difference between ejbCreate() and ejbPostCreate() in EntityBean?
An ejbCreate() method is called just before persisting the data into underlying database in case of Entity beans. It will create a new reco...
What is the difference between Container managed persistent and Bean managed persistent entity bean ?
The major difference between CMP and BMP Entity Beans is managing persistence of data through container in case of CMP and programmatically ...
How is container managed entity bean created?
A client first locates an EJB over network through JNDI and then gets a home interface reference on the EJB. On home interface the moment cr...
What are Entity Bean and Session Bean?
An Entity Bean is : - a persistent business data object in a business process, which provides an OR (Object Relational) mapping over an un...
How EJB evolved over the years?
The evolution of EJB can be captured in following points: 1.0: - No mandate that Entity EJB must be supported by EJB container - EJB comm...
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