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RE: Comment BB-1 draft response (was RE: SPARQL TC 2012-09-04 Agenda)

From: Polleres, Axel <axel.polleres@siemens.com>
Date: Tue, 4 Sep 2012 12:00:30 +0200
To: "andy.seaborne@epimorphics.com" <andy.seaborne@epimorphics.com>, "public-rdf-dawg@w3.org" <public-rdf-dawg@w3.org>
Message-ID: <9DA51FFE5E84464082D7A089342DEEE801463B535473@ATVIES9917WMSX.ww300.siemens.net>
Hi Andy,

Thanks for the remarks, I have addressed 1/ and 3/ in the draft as follows:

http://www.w3.org/2009/sparql/wiki/index.php?title=CommentResponse%3ABB-1&diff=4910&oldid=4905

As for 2/, I wouldn't really want to add a discussion on how this relates to SD since my impression is 
that this is orthogonal to his question and wasn't really what he had asked for.

Best,
Axel

> -----Original Message-----
> From: Andy Seaborne [mailto:andy.seaborne@epimorphics.com] 
> Sent: Dienstag, 04. September 2012 11:46
> To: public-rdf-dawg@w3.org
> Subject: Re: Comment BB-1 draft response (was RE: SPARQL TC 
> 2012-09-04 Agenda)
> 
> 
> 
> On 04/09/12 08:38, Polleres, Axel wrote:
> >
> > The comment BB-1 (Querying only the default graph from the 
> data store) 
> > Has now a draft response at:
> >   http://www.w3.org/2009/sparql/wiki/CommentResponse:BB-1
> >
> > Please support/comment,
> > Thanks,
> >
> > Axel
> >
> 
> A couple of points:
> 
> 1/ The response discusses the comment - and asks some 
> implicit questions e.g. "it might be the case that you 
> suggest here" seems to asking for further discussion.  Is 
> that the intent?
> 
> 2/ Service description is important here in describing what 
> data is in an endpoint.  It would point to the VOiD defn of 
> the default graph.
> 
> If we're happy with that, add text to refer to the service 
> description work.
> 
> 3/ The portable way to query only the default graph is to not 
> use GRAPH in the query.  I think the confusion here is that 
> someone coming from a world where the default graph is the 
> union of named graphs.
> 
> I suggest stressing this by changing you example to
> 
> """
> SELECT *
> WHERE { ..... }         <-- No use of GRAPH.
> """
> 
> 
> 	Andy
> 
> Just discussion on:
> 
> SELECT *
> FROM DEFAULT
> 
> I don't know that it means! Maybe there is an assumption 
> there is a real storage default graph that can be masked for 
> query by the union of named graphs.  This seems to be getting 
> into defining what is intentional a reflection of variability.
> 
> The real, concrete default graph can also be put in the 
> dataset as a named graph, so it is accessible via FROM and 
> FROM NAMED. (c.f. Anzo?)
> 
> 
Received on Tuesday, 4 September 2012 10:01:10 GMT

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