In the Microsoft .NET Framework, access to a wide variety of data sources is enabled through a group of classes collectively named Microsoft ADO.NET. Each type of data source is supported through the provision of a data provider. Each data provider contains a set of classes that not only implement a standard set of interfaces (defined in the System. Data namespace), but also provide functionality unique to the data source they support. These classes include representations of connections, commands, properties, data adapters, and data readers through which you interact with a data source.
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