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Lets consider default ASP.NET MVC application folder structure, so it's looks like this:
-App_data
-Content
-Controllers
HomeController.cs
-Models
AccountModels.cs
-Scripts
-Views
My question is: Where is the best place to put Entity Framework Data Model (EDMX) file? Is it Models folder? Yes - we know that good solution is to introduce new Project and reference it to MVC application, but lets forget about this now.
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As per the above figure, Entity Framework fits between the business entities (domain classes) and the database. It saves data stored in the properties of business entities and also retrieves data from the database and converts it to business entities objects automatically.
If you're asking whether it is stored on the stack or on the heap, the response is: on the heap. Instance variables for a reference type are always on the heap.
For a small project, it should be part of the Model. For a larger product, the repository and the associated model could be in a separate assembly.
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