Resource Description Framework or RDF was adopted to facilitate the connections between meta data across systems languages by building a model referred to as Triples. A triple is a set of a subject, predicate, and object. Just as in any grammer, the subject predicate and object define a relationship between the three elements. In the example given on the Semantic Web page if an actor stars in a movie, the actor is the subject, stars in is the predicate, and the movie is the object of the Triple.

RDF is a set of rules to describe information that can be found on the World Wide Web or other collections. RDF is used to describe a collection of objects, such as web pages and Semantic relationships between different sets of objects. The data housed within RDF is nodes and attached pairs of attribute and values. Any object which has a URI locator (such as pages, servers) can be a Node, even other instances of metadata. The named properties of the nodes are the Attributes, and their values are either text strings, numbers, or other resources or metadata instances. RDF allows a related graph that describes the relationships.