View source for SPARQL

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= SPARQL Query Language for RDF =
== Overview ==
[[RDF]] is a directed, labeled graph data format for representing information in the Web. [[description::This specification defines the syntax and semantics of the SPARQL query language for RDF.]] SPARQL can be used to express queries across diverse data sources, whether the data is stored natively as [[RDF]] or viewed as [[RDF]] via middleware. SPARQL contains capabilities for querying required and optional graph patterns along with their conjunctions and disjunctions. SPARQL also supports extensible value testing and constraining queries by source [[RDF]] graph. The results of SPARQL queries can be results sets or [[RDF]] graphs.

The current version of SPARQL is SPARQL 1.1, which supersedes the older version published in 2008. SPARQL 1.1 consists of 11 documents; The best is to look at the separate [http://www.w3.org/TR/sparql11-overview/ SPARQL 1.1 Overview]  document, which lists all the documents and how they relate to one another.

== Recommended Reading ==
A number of textbooks have been published on [[RDF]], RDFS, and on Semantic Web in general. Please, refer to a [[Books|separate page]] listing some of those, as maintained by the community. That list also includes references to conference proceedings and article collections that might be of general interest.
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