What\'s the difference between LINQ to SQL and ADO.net ?
The following diagram provides an overview of how the ADO.NET LINQ technologies relate to high-level programming languages and LINQ-enabled data sources.
(source: microsoft.com)
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from http://msdn.microsoft.com/library/vstudio/bb399365
LINQ helps you to integrate ADO.NET in the part of the code where the compiler can evaluate and help you with IntelliSense and so on. So with LINQ you can use ADO.NET more easily...