Introducing OData - David Chappell

David Chappell May 2011 Introducing OData DATA ACCESS FOR THE WEB, THE CLOUD, MOBILE DEVICES, AND MORE Sponsored by Microsoft Corporation Copyright 2011 Chappell & Associates 2 Contents Describing OData .. 3 The Problem: Accessing Diverse Data in a Common Way ..3 The Solution: What OData Provides ..3 How OData Works: Technology Basics ..5 Using OData : Example Scenarios .. 6 Accessing Application Data from Mobile Phones and Web Browsers ..6 Exposing Data from a Cloud Application ..8 Using Diverse Data Sources with Different BI Tools ..9 Examining OData : A Closer Look at the Technology and Its Implementation .. 10 The OData Data Model ..10 The OData Protocol ..12 Protocol Basics ..13 Serializing Data with Atom/AtomPub ..13 Serializing Data with JSON ..19 Issuing Queries ..20 A Perspective: OData in a SOA World.

3 Describing OData Our world is awash in data. Vast amounts exist today, and more is created every year. Yet data has value only if it can be used, and it can be used only if it can be accessed by applications and the people who use them.

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