{"id":863,"date":"2011-10-13T17:42:30","date_gmt":"2011-10-13T17:42:30","guid":{"rendered":"https:\/\/blogs.msdn.microsoft.com\/odatateam\/2011\/10\/13\/vocabularies-in-wcf-data-services\/"},"modified":"2011-10-13T17:42:30","modified_gmt":"2011-10-13T17:42:30","slug":"vocabularies-in-wcf-data-services","status":"publish","type":"post","link":"https:\/\/devblogs.microsoft.com\/odata\/vocabularies-in-wcf-data-services\/","title":{"rendered":"Vocabularies in WCF Data Services"},"content":{"rendered":"

Update (6\/4\/2012): <\/strong>This post is updated to reflect the few changes that were made to the vocabularies in OData v3 and the vocabularies feature in WCF Data Services 5.0. Please download the WCF Data Services 5.0 from the <\/em>download center<\/em><\/a> to follow along the code samples below.<\/em><\/p>\n

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One new feature in WCF Data Services  is Vocabularies. You can learn more about vocabularies and how they are supported in OData here<\/a>. In a nutshell, a vocabulary is a namespace containing terms where each term is a named metadata extension for an OData service. In this post, I\u2019ll explain how to use this feature to produce an OData service extended with vocabularies, give an example of how to consume annotated metadata on the client side, and finally give some examples of annotations supported in the CTP.<\/p>\n

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Following are a few example uses which might leverage vocabularies:<\/p>\n

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