SPARQL (Simple Protocol and RDFQuery Language) is one of the query languages that access the Resource Description Framework (RDF) information in Web 3.0. SPARQL is a recommendation adopted by the World Wide Web Consortium
(W3C) for querying the RDF framework and representing the results. The query refers to thenamespace
, the output form, and the actual formulation of the query. The namespace is selected by PREFIX, the output form by SELECT, and the formulation by WHERE.