Data Access Layer design patterns

Question

I have to design a Data Access Layer with .NET that probably will use more than one database management system (Mysql and Sql Server) with the same relational design.

<

Answer 1

The easiest solution would be to use an ORM. Check out LLBLGen. Using the Adapter Model you can switch between data providers while using the same business objects. It can generate code for both MySql and Sql Server.