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WCF 4.0 Multi-tier Services Development with LINQ to Entities by Mike Liu

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Chapter 6. LINQ—Language Integrated Query

In the previous chapters of this book we created one WCF service with three layers. In the data access layer we used the raw ADO.NET SQL adapters to communicate with the Northwind database. In one of the following chapters we will explain how to use LINQ to Entities in our data access layer.

Before using LINQ to Entities in our data access layer we need to understand what LINQ or LINQ to Entities actually mean. Before understanding LINQ, we first need to understand some new C# features related to LINQ. In this chapter we will first explore these new C# features related to LINQ, then we will explore LINQ. In next two chapters we will explore LINQ to Entities, and after that we will apply LINQ to Entities ...

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