Semantic Web Technologies

RDF Schema

What is it?

An extension of RDF.

Purpose

Used for definition of metadata.

RDF itself provides no means for defining ... application-specific classes and properties. Instead, such classes and properties are described as an RDF vocabulary, using extensions to RDF provided by ... RDF Schema. RDF Primer

RDF Schema provides a type system for RDF. RDF Primer

Syntax

RDF/XML.