Question on EJB

Greenhorn

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posted 17 years ago

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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.

Ricardo Ferreira

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Posts: 156

posted 17 years ago

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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.

Ricardo Ferreira, Sun Certified Enterprise Architect IBM Certified SOA Solution Designer IBM Certified RUP v7.0 Solution Designer IBM Certified Specialist for RUP v2003

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