This article disscusses about the Architectural Considerations for ASP.NET 3.0 and Building Multi-Tier Application Using LINQ to SQL. In this article I will show you an approach on how to build multi-tier web application in ASP.NET 3.0 Using LINQ to SQL. In the present programming world, creating N-Tier application has become a common practice. and .NET framework is more flexible in providing a greater support to do the same. In general N-Tier applications have the following layers or tiers : 1. Presentation 2. Business Logic 3. Data Access and 4. Database Layer. Each of these layers serves a dinstinct task. The architecture explained in this article is similar to the classic N-Tire but will replace the Database layer with a new layer called DataLinq Layer that Uses LINQ to SQL to perform the database operation.

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