Entity Framework Today (May 2012)
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The document is a presentation by Julie Lerman on Entity Framework, covering its features, workflow options like code first and database first, and enhancements in versions EF 4 and EF 5. It includes topics such as migrations, performance improvements, and architecture recommendations for implementing Entity Framework in projects. Additionally, it provides resources and links for further learning and support concerning Entity Framework.
Entity Framework Today (May 2012)
- 1. Entity Framework Today Julie Lerman The Data Farm [email protected] twitter @julielerman Presented at Dotnet-zentral.ch May 2, 2012
- 2. Julie Lerman consultant/mentor Microsoft MVP, INETA Speaker, ASPInsider, MCP, VTdotNET Leader, Pluralsight video author contact [email protected] www.thedatafarm.com blog theDataFarm.com/blog twitter @julielerman book web site LearnEntityFramework.com
- 3. Plan A • Entity Framework Overview • “Getting Started” Code • Focus on some features • Non-”DemoWare” Solution
- 4. Object Relational Mapper LINQ to Entities Entity SQL
- 5. Entity Data Model Runtime EDMX EDM (XML) System.Data.Metadata.Edm .EntityType .EdmProperty .AssociationType .EdmType .Facet Code + Code First
- 6. EF4.x EntityFramework.dll Code First DbContext Model-less EF Simpler Access POCOPOCOPOCOPOCO Find, Local, Validation, etc… Entity Framework 4 Visual Studio 2010 EDM Designer “Core” (in .NET 4) (Object Services API (ObjectContext) & EntityClient API)
- 7. EF 5.x EntityFramework.dll Code First DbContext Model-less EF Simpler Access POCOPOCOPOCOPOCO Find, Local, Validation, etc… Entity Framework Visual Studio 11 Core EDM Designer (in .NET 4.5) (Object Services API (ObjectContext) & EntityClient API) New: Enum support, Geo Data, auto query cache etc.
- 9. Getting Started Pick your modeling workflow DB First, Model First, Code First Use DbContext for new projects ObjectContext accessible if you need it Database? Existing or let Code First/Model First create it Database or Model Changes Model Updates & DB Updates (“migrations”) supported Consider architecture *Separate projects for model, context, etc *Repositories, UOW, automated tests, etc.
- 10. Shall we code?
- 11. Feature Demos More on migrations No-tracking queries (performance) Managing disconnected state Data layer validations My favorite small DbContext features T4Scaffolding to gen context & repo
- 12. ARCHITECTURE
- 13. UI Service Layer Bus Layer Repo/UoW LINQ Data Layer EF Database
- 14. Testable Classes System.Data.Entity Fake Object/DbSet Fake Metadata & Fake Context & DataA Object/DbContext Context & Data B Class Class Class Repositories Class Repositories Tests Repositories Repositories Unit of Work UI
- 15. Some “controversies” EF &Repository/Unit of Work Abstracting ORMs
- 16. Resources • MSDN Developer Center: msdn.com/data/ef • EF Team: blogs.msdn.com/adonet • Rowan Miller Blog: romiller.com • Arthur Vickers: blog.oneunicorn.com • Julie Lerman: thedatafarm.com/blog • LearnEntityFramework.com • Pluralsight.com videos • MSDN Magazine Data Points Column – http://JulieL.me/datapointscolumn
- 17. Julie Lerman consultant/mentor Microsoft MVP, INETA Speaker, ASPInsider, MCP, VTdotNET Leader contact [email protected] www.thedatafarm.com blog theDataFarm.com/blog twitter @julielerman book web site LearnEntityFramework.com
- 18. Resources • MSDN Developer Center: msdn.com/data/ef • EF Team: blogs.msdn.com/adonet • Rowan Miller Blog: romiller.com • Arthur Vickers: blog.oneunicorn.com • Julie Lerman: thedatafarm.com/blog • LearnEntityFramework.com • Pluralsight.com videos • MSDN Magazine Data Points Column – http://JulieL.me/datapointscolumn
- 19. Julie Lerman consultant/mentor Microsoft MVP, INETA Speaker, ASPInsider, MCP, VTdotNET Leader contact [email protected] www.thedatafarm.com blog theDataFarm.com/blog twitter @julielerman book web site LearnEntityFramework.com