21.13. Summary
ADO.NET is the native data access technology of the .NET platform, and you can use it in three distinct manners: connected, disconnected, or through the Entity Framework. In this chapter, you examined the connected layer and learned the role of data providers, which are essentially concrete implementations of several abstract base classes (in the System.Data.Common) namespace and interface types (in the System.Data namespace). You also saw that it is possible to build a provider-neutral code base using the ADO.NET data provider factory model.
You also learned that you can use connection objects, transaction objects, command objects, and data reader objects of the connected layer to select, update, insert, and delete records. Also, ...
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