Data centric apps for Web, desktop and mobile with Entity Framework 5Diego VegaDeveloper Lead Microsoft

Data Centric Apps with EF5 | Agenda

Brief EF overvie

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What is new in

EF5Demos Post

EF5

EF Overview | What is EF?

Microsoft’s Object/Relational Mapper

• Recommended technology to connect .NET applications to databases

• LINQ against disparate relational databases

Product goals• Make .NET & Windows Azure the best

platform for data centered apps• Be the most productive data access API

Existingdatabase

Newdatabase

Code-centricDesigner-centric

Database first• Reverse engineer into .edmx model• Classes auto-generated from .edmx

Model first• Create .edmx model in designer• Generate database from .edmx• Classes auto-generated from .edmx

Code first• Reverse engineer into code model• Requires EF PowerTools download

Code first• Define classes and mapping in code• Database auto-created at runtime

EF Overview | Developer Workflows

EF5 | How we ship it

EF NuGet Package• DbContext, Code First & Migrations• Included in VS 2012• Works with .NET 4.0 & 4.5, VS 2010 & 2012

EF Core bits in .NET• Updated in .NET 4.5• New features like Enums, Spatial, better performance, etc.

EF Designer in VS• Updated in VS 2012• New features like multiple diagrams, colorization, DbContext code generation, etc.

EF5 | Major new features

Both for code-centric and designer-centric developers• Enum support• Spatial data types• Auto-compiled query• Parameter evaluation performance

Only for designer-centric developers• Table-valued Functions (TVFs)• Multiple diagrams and coloring• Batch import of stored procedures• DbContext code generation

Demo:Park Finder

Demo: Park Finder

Search Text

Coordinates

List<Park>

MapGridVie

w

Bing Maps API

ParkFinder Web API

SQL Server

Entity Framework

EF5 | Performance ImprovementsInline LINQ query

return db.People.First(e => e.Id == id);

CompiledQuery

private static readonly Func<MyContext, int, Person> findPerson = CompiledQuery.Compile((MyContext db, int id) => db.People.First(e => e.Id == id)); …

return findPerson(id);

EF5 | Performance Improvements

// Micro-benchmark: repeated execution of a query by keyusing (var db = new MyContext()){ for(int id = 0; id < 5000; id++) { db.People.First(e => e.Id == id); }}

EF5 | Query by key benchmark results

Handcoded ADO.NET

EF Raw SQL EF Compiled Query Entity SQL LINQ to Entities LINQ to SQL

.NET 4.0 1 1.98519163763066 2.62108013937282 15.1811846689895 23.140243902439 16.4965156794425

.NET 4.5 1 2.10754414125201 2.69101123595506 4.06340288924559 4.11637239165329 13.5040128410915

250%

750%

1250%

1750%

2250%

Tim

e s

pent

8/8/2011 8/15/2011 8/22/2011 8/29/2011 9/5/2011 9/12/2011 9/19/20110

25

50

75

100

125

Auto-compiled queries

Parameter eval-uation optimiza-

tion

Avera

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ow

s P

er

Seco

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EF5 | Web end-to-end benchmark

Runs on .NET 4.5 up to 67% faster than on .NET 4.0!

EF6 | Go to my EF6 talk for more!Open source with contributionsCode under Apache 2.0 licenseTargeting mid-2013 RTMMicrosoft license, branding, quality and support

Major new features Async query & save Enums, spatial, etc. on .NET 4.0 Code-based configuration Connection resiliency (retries) DbContext connection and

transaction improvements Code First

Custom conventions CUD stored procedure support

Tooling consolidation

EF | Resources

Vote ef.mswish.net

Learn msdn.com/data/ef

Contribute entityframework.codeplex.com

Follow @efmagicunicorns @divega facebook.com/efmagicunicorns blogs.msdn.com/adonet blogs.msdn.com/diego