Why do we need DAO layer?

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Tags

  1. #resource
  2. #change
  3. #concept
  4. #abstracts
  5. #client
  6. #problem
  7. #interface
  8. #separate
  9. #retrieval
  10. #directly
  11. #accessing
  12. #source
  13. #database
  14. #mechanism
  15. #access