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Beginning ASP.NET 4.5 Databases, Third Edition by Damien Foggon, Sandeep Chanda

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CHAPTER 6

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ADO.NET Entity Data Model

Entity Relationship Diagrams (ERD) are very popular for modeling data tiers. They allow architects and developers to create a conceptual model that is totally decoupled from the actual storage schema of any specific database. For data-driven applications, it is challenging, however, to map the conceptual model to a physical database since data is stored and retrieved from a variety of sources containing a mix of relational and object-based stores.

This challenge gave birth to a large number of Object Relationship Mapping (ORM) tools to map Entities and Relationships in code into storage schemas specific ...

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