Insert, Update, and Delete Operations
You perform Insert, Update, and Delete operations in LINQ to SQL by adding, changing, and removing objects in your object model. By default, LINQ to SQL translates your actions to SQL and submits the changes to the database.
LINQ to SQL offers maximum flexibility in manipulating and persisting changes that you made to your objects. As soon as entity objects are available (either by retrieving them through a query or by constructing them anew), you can change them as typical objects in your application. That is, you can change their values, you can add them to your collections, and you can remove them from your collections. LINQ to SQL tracks your changes and is ready to transmit them back to the database when you call SubmitChanges.
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