The code you’ll see in this section comes from the frmDB form of the VBLINQ sample project. As you will see, the same LINQ queries will be used to process the rows returned by the queries. The difference is that this time we won’t get our data from an XML document we’ll retrieve them directly from the database. In this section, we’re going to build an application for displaying customers, orders, and order details, just as we did in the preceding section. SQL is a simple language, and I will explain the SQL statements used in this section’s examples readers who are somewhat familiar with databases should be able to follow the examples of this section. ![]() If you are not familiar with databases and SQL, you should read Chapter “Basic Concepts of Relational Databases” and then return to this section. SQL is discussed in detail in Chapter “Basic Concepts of Relational Databases”, and as you will see, SQL resembles LINQ. ![]() SQL stands for Structured Query Language, a language for querying databases.
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