What is DAO pattern in j2ee?

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Tags

1. #layer
2. #pattern
3. #access
4. #logic
5. #separate
6. #stands
7. #operations
8. #design
9. #completely
10. #persistence
11. #level
12. #object
13. #separation
14. #database
15. #principle
16. #known
17. #about
18. #service
19. #remains