Introduction to Microsoft's ADO.NET Entity Framework 5.

1. ADO.NET
E N T I T Y F R A M E W O R K
Clint Edmonson & Josh Gillespie
Polaris Solutions
Accretive Health Developer Days

2. AGENDA
• Introduction to EF 5
• Development Approaches
• Tips & Tricks
• What’s coming in EF 6

3. INTRODUCTION

4. • EntityFramework NuGet Package
• Included in Visual Studio 2012
• Works with Visual Studio 2010
• Works with .NET 4.0 and 4.5
• Most new features require .NET 4.5
ENTITY FRAMEWORK 5 (EF5)

5. • EF designer and code first
• Enum support
• Spatial data types
• Performance improvements
• EF designer only
• Table-valued Functions (TVFs)
• Multiple diagrams and coloring
• DbContext code generation
NEW IN EF5

6. New
Database
Existing
Database
Design First
Database First
Reverse engineer model in EF Designer
Classes auto-generated from model
Model First
Create model in EF Designer
Generate database from model
Classes auto-generated from model
DEVELOPER WORKFLOWS
Code First
Code First
Define classes and mapping in code
EF Power Tools provide reverse engineer
Code First
Define classes and mapping in code
Database created from code
Migrations apply model changes to database

7. EF ARCHITECTURE
• Providers
• Context
• Set
• Entities

8. TIPS & TRICKS

9. ADVANCED TECHNIQUES
• Enums
• Complex Types
• Many to Many relationships
• Proxies & Lazy loading

10. TIPS & TRICKS
• Stored procedures and raw SQL calls
• EF Power Tools
• SQL statement profiling
• DbSet.AsNoTracking
• IQueryable.Load()
• IQueryable.ToList()
• DbSet.Local

11. OTHER CONSIDERATIONS…
• Transactions
• Unit testing
• Service boundaries
• Concurrency
• Entity mapping strategies

12. • Async query and save
• Dependency injection pattern
• Code first custom conventions
• Enums, spatial, etc. on .NET 4.0
• Connection resiliency (retry)
• Tooling consolidation
• Code first stored procedure support
COMING IN EF6

13. QUESTIONS?

14. THANK YOU!
Clint Edmonson
clint.edmonson@polarissolutions.com
Josh Gillespie
josh.gillespie@polarissolutions.com

15. APPENDIX

16. References
• http://msdn.microsoft.com/data/ef
• http://entityframework.codeplex.com/wikipage?title=specs
• http://visualstudiogallery.msdn.microsoft.com/72a60b14-1581-
4b9b-89f2-846072eff19d
• http://msdn.microsoft.com/en-us/data/bb419139
• http://jkowalski.com/2010/04/23/logging-sql-statements-in-
entity-frameworkcode-first/