what is the difference between Data Abstraction Layer & Data Acess Layer?

Posted by Starx on Stack Overflow See other posts from Stack Overflow or by Starx
Published on 2010-05-15T02:23:45Z Indexed on 2010/05/15 2:34 UTC
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I am actually stuck in 3-tier structure? I surfed the internet and found two terminology "Data Abstraction Layer" & "Data Access Layer".

What are the differences among them?

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