Microsoft has introduced a new framework model termed as ADO.NET Entity Framework for Data Access Layers based on ORM (Object Relational Mapping) model in which each and every table in the database is treated as a separate entity and the relationship between these entities are defined in a separate XML mapping file (Entity Data Model). By this, it has now become possible to represent a relational model as a conceptual data model that includes types with inheritance and relationship. This is yet another conceptual revolution towards abstract programming model by which we can maintain a language-independent entity model.
Developers can now create their business applications by just writing the business logic in terms of the conceptual domain model described via object relational mapping irrespective of the logical schema of the underlying data store.
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