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Data Access Design Pattern Doubt

 
Sandeep Vaid
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Hanumant Deshmukh
Chapter 18 - Design Patterns ;

Q-1. What are the benefits of using the Data Access Object pattern? (Select two)
a The type of the actual data source can be specified at deployment time.
b The data clients are independent of the data source vendor API.
c It increases the performance of data-accessing routines.
d It allows the clients to access the data source through EJBs.
e It allows resource locking in an efficient way.
Answers: a and b

I think ans should be b) and c)
 
Marc Peabody
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Mac Ruby VI Editor
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DAO is not on the exam. It used to be on the 1.3 version of the exam.

You may want to invest in a newer book.
 
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