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Question on EJB

 
Greenhorn
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When would you use the DAO patterns in regards to a stateful session bean?

a> When using BMP to reduce the dependence on underlying datastore.

b> You would not use DAO with Stateful session beans.
 
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Originally posted by veena madhukar:
When would you use the DAO patterns in regards to a stateful session bean?

a> When using BMP to reduce the dependence on underlying datastore.

b> You would not use DAO with Stateful session beans.



Choice A is the correct answer.

There are time that you need to access BMP entity Beans by an facade represented by an Stateful Session Bean. When using BMP, it is a very good approach use the DAO pattern to reduce the dependency between the beans and the underlying datastore.
 
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