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Questions tagged [named-graphs]

Named graph is a set of RDF triples identified using a URI. This identification allows to segregate that sets, or to provide some contextual or provenance metadata.

Specification

63 questions
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How to query specific named graph in Jena TDB?

I am trying the tutorials of Jena here. I encounter similar problem with this question, but it does not solve my problem. I've already loaded my data into tdb and when I query with SELECT DISTINCT ?g {GRAPH ?g {}}, the results are as…
Charlotte
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SPARQL to a Named Graph in Jena SDB

I want to query my Apache Jena triplestore with SPAQRL. Let's assume there is a named graph "namedGraph" in my dateset. Now I query with the following SPAQRL: SELECT ?src ?subject ?predicate ?object WHERE{ GRAPH ?src{ ?subject ?predicate…
malwin
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Why am I obliged to filter the graph URI in a SPARQL query?

To fetch all the triples from a named graph in my triplestore (OpenLink Virtuoso v6.1), I have written the SPARQL query: SELECT ?s ?p ?o WHERE { GRAPH eg:myGraph { ?s ?p ?o. } } But it seems I can't define the graph URI in the GRAPH…
Thibaut Guirimand
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