RDF Overview

As mentioned, RDF is a language for describing resources. Although you can use it to describe any kind of resource, it's usually used to describe Web documents and sites. RDF is a W3C recommendation, and its main page is at http://www.w3.org/RDF. You can find the RDF model and syntax specification at http://www.w3.org/TR/REC-rdf-syntax, and the RDF schema specification at http://www.w3.org/TR/rdf-schema. Here's what the W3C says about RDF:

The Resource Description Framework (RDF) is a foundation for processing metadata; it provides interoperability between applications that exchange machine-understandable information on the Web. RDF uses XML to exchange descriptions of Web resources, but the resources being described can be of any ...

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