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The topics in this section describe how to call functions in LINQ to Entities queries.

The EntityFunctions and SqlFunctions classes provide access to canonical and database functions as part of the Entity Framework. For more information, see Calling Functions in LINQ to Entities Queries and How to: Call Database Functions (LINQ to Entities).

The process for calling a custom function requires three basic steps:

1. Define a function in your conceptual model or declare a function in your storage model.

2. Add a method to your application and map it to the function in the model with an EdmFunctionAttribute.

3. Call the function in a LINQ to Entities query.

For more information, see the topics in this section.

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