Why Entity Framework? [closed]

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My question here is why should i want use the entity framework instead of other XYZ.Can anyone please give a crystal clear idea/overview about this.Thanks in advance

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There is no crystal clear reason. Every solution requires a different set of tools.

All kind of factors are taken into account when choosing a persistence method:

1. Team skill set
2. Product size
3. Performance requirements
4. Data Structure
5. Cost
6. etc.

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i suggest you see this question:

Entity Framework 4 vs NHibernate

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Because it's supported by Microsoft.