Resource Description Framework

Resource Description Framework (wiki)

RDF = Resource Description Framework. Used as method for describing and exchanging graph data. Provides syntax notations, including Turtle (Terse RDF Triple Language).

RDF is a directed graph and is composed of the triple statements (subject, predicate, object). looking like node a (subject) --(predicate)-> node b (object). SPARQL is the standard query language for RDF graphs.

Subjects are either URI (uniform resource identifier) or blank nodes. Predicate is also an URI and represents the relationship. The object is also therefore an URI, blank node, or can b e string literal.