4. Define the data provider classes that is supported by ADO.NET.

Define the data provider classes that is supported by ADO.NET.

Answer

The .NET framework data provider includes the following components for data manipulation:

- Connection: Used for connectivity to the data source
- Command: This executes the SQL statements needed to retrieve data, modify data or execute stored procedures. It works with connection object.
- DataReader: This class is used to retrieve data. DataReader is forward only and read-only object. We cannot modify the data using DataReader.
- DataAdapter: It works as bridge between dataset and data source. Datadapter uses fill method to load the dataset.

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