- From: Andy Seaborne <andy.seaborne@epimorphics.com>
- Date: Tue, 29 Mar 2011 11:51:58 +0100
- To: SPARQL Working Group <public-rdf-dawg@w3.org>
Seems to me to be better to put this with the defn of RDF dataset in rq25. This needs co-ordination with the Graphs task force of RDF-WG. Added to "To_Last_Call" Andy -------- Original Message -------- Subject: RDF-ISSUE-17 (graph merge): How are RDF datasets to be merged? [RDF Graphs] Resent-Date: Mon, 28 Mar 2011 15:08:30 +0000 Resent-From: public-rdf-wg@w3.org Date: Mon, 28 Mar 2011 15:07:20 +0000 From: RDF Working Group Issue Tracker <sysbot+tracker@w3.org> Reply-To: RDF Working Group WG <public-rdf-wg@w3.org> To: public-rdf-wg@w3.org RDF-ISSUE-17 (graph merge): How are RDF datasets to be merged? [RDF Graphs] http://www.w3.org/2011/rdf-wg/track/issues/17 Raised by: David Wood On product: RDF Graphs The "RDF Semantics" spec defines how to merge two or more RDF graphs, the pain is caused by blank nodes, otherwise it's a trivial operation. The "SPARQL Query Language for RDF" spec defines the notion of RDF dataset as a set of "one graph, the default graph, which does not have a name, and zero or more named graphs, where each named graph is identified by an IRI". How do we define how to merge RDF datasets? One obvious answer is we merge all the default graphs and all the named graphs with the same IRI using the procedure defined by the "RDF Semantics" to merge RDF graphs. NB: This issue will also relate to the "Cleanup Tasks" product if the RDF Semantics document will need to change in relation to named graphs. At Talis, within the Talis Platform, we want to enable people to easily merge RDF graphs into an RDF dataset and perhaps RDF datasets into another RDF dataset. We also want to have these merge happen in real-time (i.e. as you add/remove triples from the graphs you update all the derived graphs/datasets). Thanks to Paolo Castagna of Talis for providing input to this issue.
Received on Tuesday, 29 March 2011 10:52:34 UTC