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If you haven't already done so, go into SQL Server Management Studio and open the file in the above folder and run its script. This should generate a Books database. Create an ADO entity model based upon this database.
The method of creating an entity model is not given here, since it varies according to which version of Windows Forms, Visual Studio, LINQ to SQL Classes and Entity Frameworks you are using. If in doubt, ask your trainer!
Here is one version of the entity framework to show you which tables and fields you can reference:
The database contains two tables with a relationship between them.
Use LINQ to SQL to list out all authors with the number of books they've written. The easiest way to do this is probably to create a new anonymous type with two properties:
AuthorName - the first name and last name concatenated (with a space in between)
BookCount - the number of books written by the author
This is what you should see accumulated when you run your code:
For each author you should see in parentheses the number of books they've written.
At this point you should be marvelling at how easy LINQ to SQL is to code!
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