This week's book giveaway is in the Design forum.
We're giving away four copies of Mastering Non-Functional Requirements and have Sameer Paradkar on-line!
See this thread for details.
Win a copy of Mastering Non-Functional Requirements this week in the Design forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic

Data Access Design Pattern Doubt  RSS feed

 
Sandeep Vaid
Ranch Hand
Posts: 392
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
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
pie sneak
Sheriff
Posts: 4727
Mac Ruby VI Editor
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
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.
 
It is sorta covered in the JavaRanch Style Guide.
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!