Is there any default cache management system with Entity beans ?

EJB Interview Questions and Answers

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29. Is there any default cache management system with Entity beans ?

In other words whether a cache of the data in database will be maintained in EJB ? - Caching data from a database inside the Application Server are what Entity EJB’s are used for.The ejbLoad() and ejbStore() methods are used to synchronize the Entity Bean state with the persistent storage(database). Transactions also play an important role in this scenario. If data is removed from the database, via an external application - your Entity Bean can still be alive the EJB container. When the transaction commits, ejbStore() is called and the row will not be found, and the transaction rolled back.

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Other Interview Questions

• How can I call one EJB from inside of another EJB?
• Is there any default cache management system with Entity beans ?
• Brief description about local interfaces?
• What is EJB?
• How EJB Invocation happens?
• How EJB Invocation happens?
• What is EJB role in J2EE?
• What is a Message Driven Bean, what functions does a message driven bean have and how do they work in collaboration with JMS?
• What is EJB QL?
• Brief description about local interfaces?
• More...