This document provides an introduction to OData, an open protocol that allows building and consuming RESTful APIs in a simple and standard way. OData exposes data in an easily accessible format over HTTP, and uses common formats like JSON and Atom. It originated from Microsoft's WCF Data Services and aims to provide a standard way for APIs to expose CRUD operations and query data through URLs, headers and request bodies over HTTP.

1. OData

2. SHORT Introduction ODataToss in a demo to make it look longer Ask questions any timeOverture

3. OData = Open Data ProtocolExpose data in an easily accessible wayMicrosoft InitiativeOpen to all via Open Specification PromiseOriginated from WCF Data ServicesBuilt for the webWhat is it?Previously known as ADO.NET Data ServicesPreviously known as Astoria

4. HTTP & HTTPSREST*POST, GET, PUT, DELETE = CRUDHeaders & Request BodyHTTP

5. XML Based FormatOriginally competed with RSSBoils down to lists of dataOData requires ATOM v2ATOM

6. Text based FormatComes from JavaScript worldCan be consumed by many languagesSame as ATOM with less <> and more []JSON

7. A specificationSDK’sHelpIconWhat does Odata give us?

8. SDKsJavaScript

9. Producers in the wild?SharePoint 2010SQL AzureSQL Reporting Services

10. GoogleAlmost the sameATOM 1Different query languageLow adoption outside GoogleGData – The other OData

11. http://odata.stackexchange.com/stackoverflow/atomhttp://odata.stackexchange.com/stackoverflow/atom/Users?$top=5http://odata.stackexchange.com/stackoverflow/atom/Users?$filter=substringof('MacLean',DisplayName)http://www.odata.org/producers#http://services.odata.org/(S(readwrite))/OData/OData.svc/

12. Demo ODataProducer: WCF Data Services