Welcome to Entity Framework 4 in Action. Entity Framework is the O/RM tool that Microsoft introduced with .NET Framework 3.5 Service Pack 1 and has now updated to version 4.0. This book will enable you to use Entity Framework 4.0 to quickly build data-centric applications in a robust and model-driven way. If you’re an Entity Framework novice, you’ll learn how to create an application from scratch and build it correctly. If you’re an experienced Entity Framework developer, you’ll find lots of in-depth coverage that will improve your knowledge of this powerful tool.