Problem
How do I work with data on my
website?
?
Database

House of cards
Visual Studio WCF Client
Visual Studio WCF Service

Problem Revised
How do I work with data on my
website where I am not restrained?
?
Database

Solution
Expose data differently = REST

What is REST?
It is an architectural style for connecting
distributed applications

Solution
ADO.NET Data Services is a RESTful
implementation

Architecture
HTML + JavaScript
Client
2
Client
HTTP
URL
ADO.NET Data Services
METHOD
LINQ to Entities
Entity Framework
1
Server
SQL
SQL Server

Step 1
Build the RESTful Service

Layers
HTTP
URL
ADO.NET Data Services
METHOD
http://[site]:[port]/coolmail.svc/Mails(guid'id')
LINQ to
Entity Framework
Entities
var result = (from m in Mails
where m.Id=new Guid('id')
select m).First();
SQL
SQL Server
SELECT m.Id, m.Sent, m.Subject, m.Sender
FROM Mails
WHERE m.Id = ‘id’

Enhance the Service

Step 2
Build the Client

What have I skipped?
It can do Create/Update/Delete - as easy as
changing the HTTP method
Can consume just like a WCF service

Want More?
www.sadev.co.za
The slide deck
Expanded demo code
www.drp.co.za
ADO.NET Data Services Cheat Sheet