Introduction
ADO.NET is one of the jewels of the .NET framework. ADO.NET is a revision to ADO that emphasizes disconnected database programming. The reason for this is straightforward and the argument is valid. In the connected database model, a programmer obtains a handle to a database and holds it while performing operations against the database. This causes a problem related to the finite number of connections and the maintenance of those connections in a disconnected space, specifically the World Wide Web. The Web itself is disconnected in the sense that it uses a request-and-response model in which requests are made, the Web server responds, and in between there is a very loose relationship between the client (your browser) and the server ...
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