Book Image

Entity Framework Tutorial (Update) - Second Edition

By : Joydip Kanjilal
Book Image

Entity Framework Tutorial (Update) - Second Edition

By: Joydip Kanjilal

Overview of this book

The ADO.NET Entity Framework from Microsoft is a new ADO.NET development framework that provides a level of abstraction for data access strategies and solves the impedance mismatch issues that exist between different data models This book explores Microsoft’s Entity Framework and explains how it can used to build enterprise level applications. It will also teach you how you can work with RESTful Services and Google’s Protocol Buffers with Entity Framework and WCF. You will explore how to use Entity Framework with ASP.NET Web API and also how to consume the data exposed by Entity Framework from client applications of varying types, i.e., ASP.NET MVC, WPF and Silverlight. You will familiarize yourself with the new features and improvements introduced in Entity Framework including enhanced POCO support, template-based code generation, tooling consolidation and connection resiliency. By the end of the book, you will be able to successfully extend the new functionalities of Entity framework into your project.
Table of Contents (16 chapters)
Entity Framework Tutorial Second Edition
About the Author
About the Reviewers

Chapter 6. Working with LINQ to Entities

Language Integrated Query (LINQ) is a query translation pipeline that has been introduced as part of the C# 3.0 language. It is an extension to the C# language and provides a simplified framework to access relational data in a strongly typed and object-oriented way. You can even use LINQ to query data from other data sources, such as XML, objects, and collections. Before LINQ, we used PL-SQL and T-SQL to query data from databases. However, none of them is type safe and does not have compile time checks to verify whether the statements are correct at compile time.

In this chapter, we will discuss LINQ to Entities. You will learn how to use LINQ on top of Entity Framework and how LINQ can be used to query data against the EDM. We will start our discussion with a quick look at what LINQ is and examine some of its features.

In this chapter, you will learn about the following:

  • Introducing LINQ

  • Benefits and features of LINQ

  • Components of the LINQ architecture...