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Mastering Entity Framework Core 2.0

You're reading from   Mastering Entity Framework Core 2.0 Dive into entities, relationships, querying, performance optimization, and more, to learn efficient data-driven development

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Product type Paperback
Published in Dec 2017
Publisher Packt
ISBN-13 9781788294133
Length 386 pages
Edition 1st Edition
Languages
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Author (1):
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Prabhakaran Anbazhagan Prabhakaran Anbazhagan
Author Profile Icon Prabhakaran Anbazhagan
Prabhakaran Anbazhagan
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Toc

Table of Contents (13) Chapters Close

Preface 1. Kickstart - Introduction to Entity Framework Core FREE CHAPTER 2. The Other Way Around – Database First Approach 3. Relationships – Terminology and Conventions 4. Building Relationships – Understanding Mapping 5. Know the Validation – Explore Inbuilt Validations 6. Save Yourself – Hack Proof Your Entities 7. Going Raw – Leveraging SQL Queries in LINQ 8. Query Is All We Need – Query Object Pattern 9. Fail Safe Mechanism – Transactions 10. Make It Real – Handling Concurrencies 11. Performance – It's All About Execution Time 12. Isolation – Building a Multi-Tenant Database

Default behavior of a transaction

EF supports transactions out of the box, all we need to do is perform SaveChanges() only once; it saves changes only if the transaction has been executed successfully, otherwise, the transactions will be rolled back automatically.

Let's investigate how we could practically leverage the default transactional behavior in our blogging system:

  • We need two entities that need to be updated in a single web request
  • Both the entities should be added/updated in the data context
  • With a single SaveChanges(), both entities will be updated in the data store

In the blogging system, let's include support to add one or more tags in posts and learn about default transaction support in parallel with the Tags integration in posts.

Adding tags support...

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