Introducing Object Relational Mapper
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by Uday Denduluri
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Object Relational Mapper (ORM) is the layer between application and database which automates the SQL query generation.  In applications with ORM everything is an object.  Application interacts with the database as it is it is interacting with another object.  Hence, erroneous tasks like writing SQL queries can be avoided.  The same valuable time can be spent in much better tasks.

ORM also has its own limitations.  The need of the hour is to have a common standard that need be adopted by the all the ORM packages.  The performance related issues also need to be taken care of.  Until or unless both of these happen we cannot see the ORM implemented applications prosper.

There are varieties of ORM packages available in the market, but choosing one of them would be a wise decision.  The features of the package should be thoroughly investigated.  Based upon the same a decision has to be taken.  We have both commercial as well as free packages available.

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