1. WCF Data Services
for OBA & Mobile Development
UPI, March 13, 2010
Andri Yadi | a@dycode.com
CEO, DyCode | Microsoft MVP
http://geeks.netindonesia.net/blogs/andriyadi

2. Cloud Computing

3. SOAP/WS-*?

4. SOAP arguably are:
• Complex
• Slow
• Heavyweight
• Tied to development tools and libraries
• Not supported universally
• Cross-vendor/platform interoperability NOT
perfect

5. REST?
REpresentational State Transfer

6. != Protocol
REST != Standard
!= Format

7. REST == Architectural Style
for connecting distributed applications

8. REST
• Server-side resources identified by URI
• Access resources over HTTP:
POST Create INSERT
GET Retrieve SELECT
PUT Update UPDATE
DELETE Delete DELETE
• Returned data is “plain”: Atom, plain-XML or
JSON

9. URL
Resources
VERB
(GET, POST, PUT, DELETE)
Resource 1
Client Representation
Resource 2
XML JSON
Server
Status
Representation
XML JSON

10. OData
Open Data Protocol = REST + AtomPub +
Modeling + URI Semantics
An open web protocol for querying and updating data, applies web technologies
such as HTTP, Atom Publishing Protocol (AtomPub) and JSON to provide access to
information from varying sources

11. Data Services Client
HTTP
(Open Data Protocol)
WCF Data Services
Windows Azure SQL Server 2008
Table Storage Reporting Services

12. WCF Data Services

13. WCF Data == Astoria
Services == ADO.NET Data Services

14. WCF Data Services
A RESTFul implementation for data-centric
services

15. HTTP
Open Data Protocol (OData)
Hosting/HTTP Listener
Data Services Runtime
Data Access Layer
Entity Custom LINQ
Framework Provider
Relational Other
Database Sources

16. HTTP
http://localhost:1234/MyData.svc/MyEntities(10)
Hosting/HTTP Listener
Data Services Runtime
var q = from e in MyEntities where id = 10 select e;
Data Access Layer
Entity
Framework
SELECT * FROM MyEntity WHERE id = 10
SQL Server

17. Demo

18. Data Services Client
HTTP
(Open Data Protocol)
WCF Data Services

19. Resources
• OData web site: http://odata.org
• Astoria team blog: http://blogs.msdn.com/
astoriateam
• MSDN: http://msdn.microsoft.com/data
• Visualizer: In Visual Studio 2010 Tools >
Extension Manager > Search > “open data
protocol”
• iPhone developer portal:
http://developer.apple.com/iphone

20. Q&A

21. DyCode
www.dycode.com | office@dycode.com
Dynamic IT Solutions for Optimal Business Value