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Modern programming languages define information in the form of objects. Objects have unique identity as each instance is physically different from another. Objects have references that identify and link instances together.

Rows are left intentionally distinct requiring related rows to be tied together loosely using foreign keys.

The samples in this document are shown in both C# and Visual Basic; LINQ to SQL can be used with the LINQ-enabled version of the Visual Basic compiler as well.

The first step in building a LINQ to SQL application is declaring the object classes you will use to represent your application data. We will start with a simple class Customer and associate it with the customers table in the Northwind sample database.

To do this, we need only apply a custom attribute to the top of the class declaration.

LINQ to SQL defines the Table attribute for this purpose.

Until now, it has been the job of the application developer to resolve this mismatch in each application separately.

C# The Table attribute has a Name property that you can use to specify the exact name of the database table.

If no Name property is supplied, LINQ to SQL will assume the database table has the same name as the class.

It is no wonder that applications expected to bridge this gap are difficult to build and maintain.

It would certainly simplify the equation to get rid of one side or the other.

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