What are the possible data access layer design-patterns for desktop application?

What are the possible data acce开发者_如何学Pythonss layer design-patterns for c# applications ?

Any advice will be useful. Thanks.

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Despite the question being somewhat broad, you might find Spring.NET's DAO support helpful (particularly the ADO chapter).

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A lot of data access layer design-patterns are described here. 3 tier architecture with data mapping is widely spread