Overview

About

SPARQL is a query language designed for the Resource Description Framework (RDF).

RDF is a directed, labeled graph data format for representing information in the Web.

Features

• It is designed to make queries from Linked Data.
• It navigates the Graph Data Model of RDF.
• Can be used to express queries across diverse data sources
  • whether the data is stored natively as RDF or
  • viewed as RDF via middleware.
• Contains capabilities for querying
  • Required and optional graph patterns
  • Along with their conjunctions and disjunctions.
• Supports
  • aggregation
  • subqueries
  • negation
  • creating values by expressions
  • extensible value testing
  • and constraining queries by source RDF graph.
• Results of SPARQL queries can be result sets or RDF graphs.