This portal offers users access to SPARQL, which can be consulted via requests HTTP-GET to the REST API specified in the portal configuration data. As an endpoint we recommend Apache Marmotta platform because of its simplicity for installation and use, although our portal can support any other platform that allows the execution of queries SPARQL via HTTP-GET.

This page has also been created to facilitate consultations and tests on the SPARQL access point, here are some examples:

  • Get all the triples for a given subject: SELECT * WHERE {<> ?p ?o}
  • List of concepts used: SELECT DISTINCT ?concept WHERE { ?s a ?concept . } LIMIT 50

SPARQL specification language

This function is not available in the demo.

Field label Field control