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　　其内容介绍如下：

　　One of the most common forms of data used in applications today continues to be relational data that is stored in various database systems such as Microsoft SQL Server.
　　In this session you will learn about the flavors of LINQ that are designed to access relational data including LINQ to SQL, LINQ to Datasets, and LINQ to Entities.
　　And then you will learn an efficient, repeatable way to apply industry design patterns to build scalable object-oriented data access layers, which is LINQ Object Relational Mapping.

　　其主题有如下几个方面：

　　※ LINQ to Relational
　　　　× LINQ to SQL
　　　　× LINQ to Entities
　　　　× ADO.NET Entity Framework
　　　　× LINQ to DataSet
　　※ Summary

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