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Use of ORM Tool  RSS feed

 
ashwin bala
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Posts: 52
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Hi.. can any one say use of ORM tool... ? It is mentioned as data persistence.can anyone explain in laymen term what is data persistence?
i see the practical use when the database is changed.apart from this is there anything related to performance or architecture?
 
It is sorta covered in the JavaRanch Style Guide.
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