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What is the namespace required for DataAccess in C#

1.The main set of classes for data access are part of the ADO.NET and are contained in System.Data namespace.

2.Entity Framework extends the ADO.NET with more functionalists and also wizards in Visual Studio.
Namesapces: System.Data.Objects, System.Data.EntityClient.
Here is a link:[^]

3.LINQ could be used on top of both, and its main namespace is System.Linq.
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Go through all the system data namespaces as listed here[^].
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