February 2012
Intermediate to advanced
258 pages
6h 51m
English
Content preview from Programming Entity Framework: DbContextBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Preface
Microsoft’s principal data access technology, ADO.NET Entity Framework, has had two major releases as part of the .NET Framework. .NET 3.5 brought us the first version of Entity Framework, which is covered in the first edition of Programming Entity Framework (O’Reilly). In 2010, Microsoft .NET 4 was released, containing the next version of Entity Framework, referred to as Entity Framework 4. The completely revised second edition of Programming Entity Framework (O’Reilly) was dedicated to teaching readers how to use this version of Entity Framework in Visual Studio 2010.
When .NET 4 was released, the Entity Framework team was already hard at work on a new addition, called Code First, to provide an alternative way of building the Entity Data Model that is core to Entity Framework. Rather than using a visual designer, Code First allows you to create the model from your existing classes. At the same time, the team devoted resources to making Entity Framework easier to use. They focused on the most commonly used features and tasks in Entity Framework and built a new API called the DbContext API.
This book is dedicated to teaching readers how to use the features of
the DbContext API. In addition to the DbContext class,
you’ll find the DbSet class for performing set
operations, improved APIs for change tracking and handling concurrency
conflicts, and a Validation API that integrates with validation features
already present in .NET.
In this book, you will learn how to query and update ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.