Book Image

Entity Framework Tutorial

By : Joydip Kanjilal
Book Image

Entity Framework Tutorial

By: Joydip Kanjilal

Overview of this book

<p>The ADO.NET Entity Framework is a new way to build the data access layer of your Windows or web applications. It's an Object Relational Mapping (ORM) technology that makes it easy to tie together the data in your database with the objects in your applications, by abstracting the object model of an application from its relational or logical model.<br /><br />This clear and concise book gets you started with the Entity Framework and carefully gives you the skills to speed up your application development by constructing a better data access layer. It shows you how to get the most from the ADO.NET Entity Framework to perform CRUD operations with complex data in your applications.<br /><br />This tutorial starts out with the basics of the Entity Framework, showing plenty of examples to get you started using it in your own code. You will learn how to create an Entity Data Model, and then take this further with Entity types. You will also learn about the Entity Client data provider, learn how to create statements in Entity SQL, and get to grips with ADO.NET Data Services, also known as Project Astoria.</p>
Table of Contents (13 chapters)
Entity Framework Tutorial
Credits
About the Author
About the Reviewer
Preface

Glossary


Entity: This is the core concept in the Entity Framework. An Entity essentially models individual objects, like, employees, customers, etc. It is something that is uniquely definable, distinctly identifiable, and contains information pertaining to the entity.

Relational or Logical Model: A relational or logical model depicts the logical view of data that comprises of the normalized entities and their inter-relationships in a database.

Object Model: An Object Model may be defined as a collection of the objects, members, and properties of a class and the relationships between them that illustrates the structure of a system. An Object Model of a system is centered on the three basic properties of Object Oriented Programming—encapsulation, abstraction, and inheritance.

The Entity Data Model (EDM) is an implementation for the Entity Relationship model (commonly called the E-R model). It depicts the entities and their relationships. The EDM is a view of the data store that your application will use.