XML and RDF

RDF is meta-data about Web resources (anything referable by a URI)

• constrains the XML syntax according to a specified data model, semantics are explicit
• assertions about other documents

<RDF:Description ID="John_Smith">
    <BIB:Email>john@smith.com</BIB:Email>
    <BIB:Phone>+1 (555) 123-4567</BIB:Phone>   
</RDF:Description>