1. Microsoft Build 2016
11/15/2018 6:28 AM
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

2. B852
Entity Framework Core
Rowan Miller
Program Manager

3. Naming history Entity Framework Everywhere Entity Framework 7 (EF7)
Entity Framework Core (EF Core) 1.0

4. Agenda
Introducing EF Core
EF Core and EF6.x
Demos
Next steps

5. Setting expectations Listed as a level 200 session
Should have something for everyone ( )
This is an EF Core session
Preview of what’s ahead
Not a look at current stable releases

6. Introducing EF Core

7. Entity Framework project status
Runtime on NuGet
Tooling on Microsoft Download Center
Latest version included in Visual Studio
Entity Framework Core 1.0
Entity Framework 6.x
Entity Framework 5
New runtime components on NuGet
Core runtime components in .NET
Tooling in Visual Studio
Entity Framework 4.x
Entity Framework 4
Runtime in .NET Framework
Tooling in Visual Studio
Entity Framework 3.5 SP1

8. New platforms

9. COMMON INFRASTRUCTURE
New platforms
.NET FRAMEWORK
.NET CORE
XAMARIN
MODELS
APP
WPF
Windows Forms
UWP
iOS
Android
ASP.NET
ASP.NET Core *
OS X
LIBRARIES
BASE
Base Class Library
Core Library
Mono Class Library
Compilers
Languages
Runtime components
COMMON INFRASTRUCTURE
EF6.x
EF Core

10. New data stores

11. New data stores Relational & non-relational Example providers
Not a magic abstraction
High level services that are useful on all/most stores
Non-common concerns handled by provider extensions
Example providers
Relational (SQL Server, SQLite, Postgres, SQL Compact etc.)
Azure Table Storage
Redis
In Memory (for testing)
Just relational providers for v1.0.0

12. New features

13. New features Batching during SaveChanges Client eval in LINQ queries
Shadow state properties
SQL Server sequences
Alternate keys

14. Lightweight & extensible core

15. Lightweight & extensible core
Top level API built over a modular core
Core = metadata, SQL generation, change tracking, etc.
Built as a collection of services
Follows dependency injection principles
Easy to use/replace/extend individual services
Optimized for memory and CPU usage
Pay-per-play components

16. EF Core & EF6.x

17. EF Core Mindful of our past… …but not constrained by it
Same top level experience as EF6.x
Not changing things just for the sake of it
…but not constrained by it
New code base
Completely different core
Not all features from EF6.x will be implemented

18. EF Core & EF6.x EF6.x is the mature data stack EF Core is a true v1
8 years of RTM releases = features and stability
Rich ecosystem of database providers
Patch and minor releases will continue
EF Core is a true v1
Basic feature set shipping in v1
Limited set of early adopter database providers

19. EF Core & EF6.x EF6.x will be the right choice for many applications
Carefully evaluate requirements if considering EF Core
Many features not implemented in (e.g. lazy loading, stored procedure mapping, etc.)
Less mature code base (e.g. LINQ translator has limitations)
EF6.x to EF Core is “port” not “upgrade”
Very basic code will port easily
Many APIs have changed drastically
Beware of behavior differences in similarly named APIs

20. Demos

21. Demo EF Core 101

22. Demo Performance improvements

23. Demo Simplified metadata API

24. Demo Extensible core

25. Extensible core
Top Level API DbContext, DbSet, ChangeTracker, Database, etc.
Core Services StateManager, CompiledQueryCache, etc.
Database Provider Services SqlServerTypeMapper, SqlServerSqlGenerationHelper, etc.

26. Demo Model building pipeline

27. EF6.x model building pipeline
Entity Classes
Conventions
Context
DbSet properties
OnModelCreating
DbSet Discovery
Model
Configuration

28. EF Core model building pipeline
Entity Classes
Conventions
Context
DbSet properties
OnModelCreating
DbSet Discovery
Model

29. Demo Same model, multiple platforms

30. Demo Same model, multiple databases

31. Demo SQL generation improvements

32. Next steps

33. Next steps docs.efproject.net github.com/aspnet/EntityFramework
github.com/rowanmiller/Demo-EFCore

34. Related breakout sessions
MARCH 31
APRIL 1
3:30pm .NET Overview Scott Hunter & Scott Hanselman
5:00pm Introducing ASP.NET Core Scott Hanselman
6:30pm The Future of C# Mads Torgersen & Dustin Campbell
9:00am Entity Framework Core Rowan Miller
10:30am Building Desktop Apps in Visual Studio ’15’ Unni Ravindranathan
12:30pm ASP.NET Core Deep Dive into MVC Scott Hunter & Dan Roth
2:00pm Deploying ASP.NET Core Applications Dan Roth
All Build sessions on demand on Channel 9

35. dotnetConf 2016 For more information http://www.dotnetconf.net
Immerse yourself in the world of .NET
Join us for 3 days of free online content, brought to you by the .NET Community and Microsoft product teams.
For more information

36. Please Complete An Evaluation Form Your input is important!
11/15/2018
Please Complete An Evaluation Form Your input is important! or
© 2016 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

37. 11/15/2018 6:28 AM
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.