First Draft of SPARQL 1.1 Federation Extensions Published; Five SPARQL 1.1 Drafts Updated

The SPARQL Working Group has published a First Public Working Draft of SPARQL 1.1 Federation Extensions, which defines extensions to the SPARQL Query Language to support distributed SPARQL query execution. The group also published 5 updates, listed below. The group seeks feedback, particularly on open issues identified in each document.

• SPARQL 1.1 Query adds support for aggregates, subqueries, projected expressions, and negation to the SPARQL query language.
• SPARQL 1.1 Update defines an update language for RDF graphs.
• SPARQL 1.1 Service Description defines a vocabulary and discovery mechanism for describing the capabilities of a SPARQL endpoint.
• SPARQL 1.1 Uniform HTTP Protocol for Managing RDF Graphs describes the use of the HTTP protocol for managing named RDF graphs on an HTTP server.
• SPARQL 1.1 Entailment Regimes defines conditions under which SPARQL queries can be used with entailment regimes such as RDF, RDF Schema, OWL, or RIF.