1. Entity Framework 4 and WCF Data Services 4
Max Weber - Senior Consultant

2. Get started with Entity Framework 4
Presentation Goals
Get started with Entity Framework 4
Get started with WCF Data Services 4
Create website iBlog
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9/19/2018

3. Entity Data Model Entity Framework 4 WCF Data Services 4
Presentation Agenda
Entity Data Model
Entity Framework 4
Open up Visual Studio
WCF Data Services 4
Summary / Questions
Cake
Tallan, Inc. Proprietary and Confidential. Copyright 2010.
9/19/2018

4. What is the Entity Data Model?
The Entity Data Model (EDM) is a set of concepts that describe the structure of data, regardless of its stored form. The EDM borrows from the Entity-Relationship Model described by Peter Chen in 1976, but it also builds on the Entity-Relationship Model and extends its traditional uses.
Extensions to E-R Model:
Separation of the entities and relationships from their storage medium
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5. Entity Data Model Key Concepts
Entity Type
entity key, inheritance, entity Sets, entity container
Association Type
foreign key, multiplicity, navigation properties, association set, entity container
Property
Boolean, Int32, String
DateTime, Guid, Binary
Complex Types
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9/19/2018

6. Entity Framework Overview

7. Entity Framework Overview
Tallan, Inc. Proprietary and Confidential. Copyright 2010.
9/19/2018

8. Conceptual Model Storage Model Data Providers Entity Framework 4
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9. Conceptual Model – Entity Framework 4
Conceptual schema definition language (CSDL)
Conceptual model == Domain model
.csdl file extension
CSDL is Entity Framework’s implementation of the Entity Data Model
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10. Storage Model – Entity Framework 4
Store schema definition language (SSDL)
Storage model == Logical model
Storage models are provider-specific
.ssdl file extension
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11. Mapping Concepts to Storage – EF4
Mapping specification language (MSL)
Maps between conceptual and storage models
.msl file extension
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12. Providers – Entity Framework 4
EF uses the ADO.NET Data Provider model
Providers
MS SQL Server
Indirect access to other DBs using ODBC, OLEDB
VistaDB
Devart
OpenLink Software
Synergy
…5+ more
ADO.NET Data Providers List
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13. Entity Data Model Tools
Entity Data Model Wizard
ADO.NET Entity Data Model Designer
Update Model Wizard
Command line tool EDM Generator (EdmGen.exe)
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14. Class Generation – Entity Framework
T4 Templates used to generate Entity classes from CSDL
Entities based on EntitySet
Tied to .NET, System.Data
Plain Old CLR Objects (POCO)
Need POCO extension from Visual Studio Gallery
POCO Proxy
Extensions from Visual Studio Gallery
ADO.NET POCO Entity Generator
Tangible T4 Editor
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9/19/2018

15. Code Time! – Entity Framework 4
Tallan, Inc. Proprietary and Confidential. Copyright 2010.
9/19/2018

16. Entity Framework: Recap
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17. Formerly .NET Data Services (aka Astoria) Description:
WCF Data Services
Formerly .NET Data Services (aka Astoria)
Description:
WCF Data Services enables creation and consumption of data services for the Web or an intranet by using the Open Data Protocol (OData).

18. Architecture Overview : WCF Data Services

19. RESTful work – WCF Data Services
Exposes data as resources (URI)
?$filter=Freight gt 50
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20. Open Data Protocol (OData)
Definition
OData enables you to expose your data as resources that are addressable by URIs
Enables you to access and change data by using the semantics of representational state transfer (REST)
Standard HTTP verbs supported:
GET, PUT, POST, DELETE.
Reference: WCF Data Services Overview -

21. Output Formats – WCF Data Services
Atom
JSON
XML
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9/19/2018

22. Freedom of data source – WCF Data Services
Entity Framework Provider
Uses Entity Data Models to structure access
Reflection Provider
Exposes data structures with interface IQueryable
Create/Update/Delete with interface IUpdatable
Custom Provider
Roll your own
Link to WCF Data Services Providers
Tallan, Inc. Proprietary and Confidential. Copyright 2010.
9/19/2018

23. Custom Business Logic – WCF Data Services
Service Operators
Act at a service level
Interceptors
Act at an entity set level
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24. Client Libraries – WCF Data Services
WCF Data Services Client Library
.NET Framework
Silverlight
OData SDK
Javascript (AJAX)
PHP
Java
Ruby
Windows Phone 7 (not yet released)
Objective-C (iPhone) (not yet released)
Tallan, Inc. Proprietary and Confidential. Copyright 2010.
9/19/2018

25. Code Time! – WCF Data Services
Tallan, Inc. Proprietary and Confidential. Copyright 2010.
9/19/2018

26. WCF Data Services Atom feeds in IE
OOTB IE Experience with WCF DS Atom feeds bad
Make this change to see Atom feeds properly:
Tools-> Internet Options -> Feeds and Web Slices (Settings)
Uncheck “Turn on feed reading view”
Tallan, Inc. Proprietary and Confidential. Copyright 2010.
9/19/2018

27. Recap: WCF Data Services

28. Entity Data Model Entity Framework 4 WCF Data Services 4
In Summary
Entity Data Model
Entity Framework 4
Conceptual Model
Storage Model
Class generation using T4 Templates
WCF Data Services 4
OData v2
RESTful services
Multiple Data Providers
Multiple Output formats
Tallan, Inc. Proprietary and Confidential. Copyright 2010.
9/19/2018

29. Distribution of slide deck
This slide deck will be made available from the following locations:
Tallan blogs - blogs.tallan.com
CTDOTNET –

30. Resources and Questions? Then Cake
Visual Studio Gallery
Visual Studio - Entity Framework 4.0 and WCF Data Services 4.0 in Visual Studio 2010
What's New and Cool in Entity Framework 4.0 – DevelopMentor
ADO.NET Entity Framework
Entity Framework At-a-Glance
WCF Data Services
WCF Data Services Overview
WCF (ADO.NET) Data Services At-a-Glance
Data Development Videos
Programming Entity Framework
Don't Be Iffy (Julie Lerman)

31. It’s time for cake!
Tallan, Inc. Proprietary and Confidential. Copyright 2010.
9/19/2018