Concept, capabilities and features ADO.NET

Concept, capabilities and features ADO.NET.

- It is data-access technology, primarily disconnected and designed to provide efficient, scalable data access.
- The disconnected data is represented within a DataSet object.
- A data provider is a set of classes that provide access to databases.

The main components of data provider are:
- Connection
- Command
- DataReader
- DataAdapter

Visual Studio .NET includes two data providers:
- SQL Data Provider
- OleDb Data Provider

Two additional data providers are included in Visual Studio .NET 2003:
- ODBC Data Provider
- Oracle Data Provider
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