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You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. The application uses the ADO.NET Entity Framework to manage customer and related order records. You add a new order for an existing customer. You need to associate the Order entity with the Customer entity. What should you do?

Set the Value property of the EntityReference of the Order entity.
Call the Add method on the EntityCollection of the Order entity.
Use the AddObject method of the ObjectContext to add both Order and Customer entities.
Use the Attach method of the ObjectContext to add both Order and Customer entities.

Correct Answer: Set the Value property of the EntityReference of the Order entity.

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