SPARQL/Extensions/Federation
< SPARQL | Extensions
This page collects approaches to federating SPARQL queries:
- ARQ has an explicit
SERVICE
keyword directs part of a query to a SPARQL endpoint (ARQ documentation). - DARQ describes a system for automatically paritioning a query over SPARQL endpoints. (project not longer active?)
- SPARQLfed describes a
BINDINGS
keyword to pass bindings between SPARQL endpoints involved in federation. The work is being implemented by EricP as part of SPASQL for MySQL. - ARC provides a procedural scripting language (SPARQLScript) that can combine distributed endpoints via its
ENDPOINT
command. It cannot federate query parts (i.e. selected patterns of a single query), though.