These are the building blocks of the model, representing real-world objects like Customer or Order .
The EDM is built on three fundamental concepts that describe the structure of data regardless of how it is stored: ado.net entity data model
These describe the relationships between entities, such as a one-to-many relationship between a Customer and their Orders . The Three Layers of EDM Architecture The ADO.NET Entity Framework Data Provider These are the building blocks of the model,