- From: Steve Harris <S.W.Harris@ecs.soton.ac.uk>
- Date: Tue, 28 Sep 2004 17:28:17 +0100
- To: RDF Data Access Working Group <public-rdf-dawg@w3.org>
On Tue, Sep 28, 2004 at 09:40:35AM -0500, Pat Hayes wrote: > >On Tue, Sep 28, 2004 at 11:47:05AM +0100, Steve Harris wrote: > >> > >> In recent discussions over email and on IRC this morning we hit a > >> difference of implementation in some RDF storage systems. > >> > >> In my system if you load multiple graphs with distinct source information > >> and the same statement appears in 2 graphs there are two distinct > >> statements. The same goes for statements that may be inferred by multiple > >> routes. > > > >Discussing this further it appears to be a philosophical difference: does > >an RDF store hold a single (merged) RDF graph with statements from > >different sources, or does it hold a set of RDF graphs. > > Surely the right answer is, yes. That is, it could be either. Its up > to the owner responsible for maintaining the store to decide. So the > QL ought to be able to handle both cases, which I think is the case > right now. I agree, if so we have to agree on wether results are implicitly DISTINT or if (A, A) == (A) in query results. - Steve
Received on Tuesday, 28 September 2004 16:28:22 UTC