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6. Creating an RDF Vocabulary > 6.1. How RDF Vocabularies Differ from XML Vocab...

How RDF Vocabularies Differ from XML Vocabularies

RDF is a way of recording information about resources; RDF, as serialized using XML, is a way of recording information about a specific business domain using a set of elements defined within the rules of the RDF data model/graph and the constraints of the RDF syntax, vocabulary, and semantics.

RDF recorded in XML is a very powerful tool—it’s been used to document events within a heterogeneous application environment, to describe publications, to record an environmental thesaurus, and so on. By using XML, you have access to a great number of existing XML applications such as parsers and APIs, even relational and Lightweight Directory Access Protocol (LDAP) data sources that are XML-capable. However, what do you get when you use RDF? Why not use XML directly?


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