what is the Best Practices to make MultiLayer Application

[Feras Mazen Taleb]

hello , I studied linq to use it for Data Access Layer and I studied csla to use it for Business logic layer WPF for Interface layer I found that I didn't use them in professinal way for example : what is the suitable way to make multilayer application in Csla with Linq can I get some notices about that even in General with linq

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