This article will help you in understanding Data Connections in Visual Studio .NET
Understanding Data Connections To connect to a data source, the first thing you need to learn about is a data connection. Each data provider has a connection class, and if you're using VS.NET, you can see these class objects as components in the Toolbox > Data tab. For example, the SqlConnection, OdbcConnection, and OleDbConnection class objects represent a connection for the Sql, Odbc and OleDb data providers, respectively. See the following:
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