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Entity Framework Core Cookbook

You're reading from   Entity Framework Core Cookbook Transactions, stored procedures, query libraries, and more

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Product type Paperback
Published in Nov 2016
Publisher Packt
ISBN-13 9781785883309
Length 324 pages
Edition 2nd Edition
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Author (1):
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Ricardo Peres Ricardo Peres
Author Profile Icon Ricardo Peres
Ricardo Peres
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Table of Contents (10) Chapters Close

Preface 1. Improving Entity Framework in the Real World FREE CHAPTER 2. Mapping Entities 3. Validation and Changes 4. Transactions and Concurrency Control 5. Querying 6. Advanced Scenarios 7. Performance and Scalability A. Pitfalls Index

Generating entities from the database

Entity Framework Core 1.0 supports two different workflows:

  • Code first: Entities are first generated as code and only then is the database generated. This follows the Domain Driven Design (DDD) approach.
  • Database first: We already have a database and we want to generate entities for it.

The first approach was made popular when Entity Framework 4.1 "Code First" was released. The idea here is that we, as C# developers, understand code better than anything, and so we model our entities as code. It is left for Entity Framework to produce the database objects (tables, relations, and so on) that will enable it to persist our data in an almost transparent way.

But what happens when you have an existing (legacy or otherwise) database, perhaps consisting of hundreds of tables? Or you have this super cool UML tool that generates the database from a model? It is troublesome, to say the least, to generate all C# entities by hand in Visual Studio, so the option...

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