mock exam question

[Vaithiya Sundaram]

In EJBs, Which two callback methods can be used for synchronizing the bean's state with the database

a. ejbStore() and ejbLoad()
b. ejbActivate() and ejbPassivate()
c. ejbStore() and ejbPasivate()
d. ejbLoad() and ejbActivate()

My answer is a
but mock exam answer is b.

[Manju Singh]

I also think you are right.

[Dogra]

You are right

[Marcelo Sousa Ancelmo]

I'm sure you are right

[Dan Drillich]

Sun says at http://java.sun.com/developer/onlineTraining/EJBIntro/EJBIntro.html

The ejbLoad() and ejbStore() methods in CMP entities are invoked when the entity bean's state is being synchronized with the database. The ejbLoad() is invoked just after the container has refreshed the bean container-managed fields with its state from the database. The ejbStore() method is invoked just before the container is about to write the bean container-managed fields to the database. These methods are used to modify data as its being synchronized. This is common when the data stored in the database is different than the data used in the bean fields. The methods might be used, for example, to compress data before it is stored and decompress it when it is retrieved from the database.

-- Dan