Transcript Eric Nelson [email protected] http://geekswithblogs.net/iupdateable http://twitter.com/ericnel Developer Evangelist Microsoft UK Session Code: DEV305 Agenda Quick recap of the journey so far Entity Framework 4.0 Drill Down Lots of demos.

Eric Nelson
[email protected]
http://geekswithblogs.net/iupdateable
http://twitter.com/ericnel
Developer Evangelist
Microsoft UK
Session Code: DEV305
Agenda
Quick recap of the journey so far
Entity Framework 4.0 Drill Down
Lots of demos
Object Relational Mapping
Many ORMs out there
No clear “winner” = relatively little adoption of
ORM
Developers waiting on Microsoft
Then we shipped two ... hmmm
LINQ to SQL in Visual Studio 2008
ADO.NET Entity Framework in Visual Studio 2008
SP1
ADO.NET Entity Framework Recap
Tools and services to create an
Entity Data Model (EDM)
Conceptual to Mapping to Storage
Tools and services for
consuming an Entity Data
Model
LINQ to Entities, Object Services and
Entity SQL
Together they address the
“impedance mismatch”
Objects in
Applications
Entity Data Model
Conceptual
Mapping
Storage
Rows in
Tables
Entity Framework 1.0
Too many pain points
The designer!
Model First not supported
Poor support for Stored Procedures
No Pluralization/Singularization
Foreign Keys hidden
Lazy Loading not supported
Missing LINQ Operators vs LINQ to SQL
Generated SQL unreadable
No support for Plain Old CLR Objects
N-Tier difficult
Entity Framework 4.0
Removing the friction
Better Tools and Design Experience
More powerful/flexible runtime
And
N-Tier*
Persistence Ignorance*
Code Only*
Note:
* Delivered in .NET Framework 4 and a separate
download
Better Tools and Design Experience
Model First
Templated code generation
Stored Procedures
Pluralization/Singularization
Complex Types
Better delete and search
Model First and Templated Code
Generation
More powerful/flexible runtime
Deferred Loading (aka lazy loading)
Foreign Keys surfaced
More complete LINQ implementation
ExecuteStoreQuery
EntityFunctions and SqlFunctions
Improvements to generated SQL
Deferred Loading, Generated SQL
Persistence Ignorance
First class support for Persistence Ignorance
No modifications to your classes!
Persistence Ignorance
N-Tier
Self Tracking Entities
N-Tier
Code Only
Create the database from the classes
No model
Convention to config
Code Only
Entity Framework
The designer!
No support for Plain Old CLR Objects
No Pluralization/Singularization
Foreign Keys hidden
Model First not supported
Lazy Loading not supported
Missing LINQ Operators vs LINQ to SQL
Generated SQL unreadable
N-Tier difficult
Poor support for Stored Procedures
Summary
Entity Framework 4.0 is rather nice!
We continue to listen and improve
Resources
Entity Framework 4.0 Resources
http://bit.ly/ef4resources
Entity Framework Team Blog
http://blogs.msdn.com/adonet/
Entity Framework Design Blog
http://blogs.msdn.com/efdesign/
Resources
www.microsoft.com/teched
www.microsoft.com/learning
Sessions On-Demand & Community
Microsoft Certification & Training Resources
http://microsoft.com/technet
http://microsoft.com/msdn
Resources for IT Professionals
Resources for Developers
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