Book Image

Mastering Entity Framework Core 2.0

By : Prabhakaran Anbazhagan
Book Image

Mastering Entity Framework Core 2.0

By: Prabhakaran Anbazhagan

Overview of this book

Being able to create and maintain data-oriented applications has become crucial in modern programming. This is why Microsoft came up with Entity Framework so architects can optimize storage requirements while also writing efficient and maintainable application code. This book is a comprehensive guide that will show how to utilize the power of the Entity Framework to build efficient .NET Core applications. It not only teaches all the fundamentals of Entity Framework Core but also demonstrates how to use it practically so you can implement it in your software development. The book is divided into three modules. The first module focuses on building entities and relationships. Here you will also learn about different mapping techniques, which will help you choose the one best suited to your application design. Once you have understood the fundamentals of the Entity Framework, you will move on to learn about validation and querying in the second module. It will also teach you how to execute raw SQL queries and extend the Entity Framework to leverage Query Objects using the Query Object Pattern. The final module of the book focuses on performance optimization and managing the security of your application. You will learn to implement failsafe mechanisms using concurrency tokens. The book also explores row-level security and multitenant databases in detail. By the end of the book, you will be proficient in implementing Entity Framework on your .NET Core applications.
Table of Contents (20 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Dedication
Preface
4
Building Relationships – Understanding Mapping

Summary


We have learned how to leverage Entity Framework on an existing system that has a live database (for illustrative purposes, we have created SQL scripts to create and simulate an existing database). We have explored NuGet packages that expose the APIs required to reverse engineer the database (including database context and corresponding data models). Finally, we have consumed the existing database in our MVC application using the scaffolding tool (which was installed on the way), and have also seen the changes required to the auto-generated code (which were not covered in Chapter 1Kickstart - Introduction to Entity Framework Core). The database-first approach was just a mechanism used for building existing systems (leveraging EF in the existing system). So far, we have used relationships (new or existing ones), but haven't figured out the relationships supported by Entity Framework. Let's explore them in Chapter 3, Relationships – Terminology and Conventions.