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Re: [OK?] Re: comments on "SPARQL Query Language for RDF"

From: Dan Connolly <connolly@w3.org>
Date: Wed, 22 Mar 2006 11:19:36 -0600
To: Enrico Franconi <franconi@inf.unibz.it>
Cc: "Peter F.Patel-Schneider" <pfps@research.bell-labs.com>, public-rdf-dawg-comments@w3.org
Message-Id: <1143047976.12963.339.camel@dirk.w3.org>

On Wed, 2006-03-22 at 17:12 +0100, Enrico Franconi wrote:
> On 22 Mar 2006, at 15:48, Peter F. Patel-Schneider wrote:
> >>  From section 2.5.2:
> >>
> >> "A pattern solution can then be defined as follows: to match a basic
> >> graph pattern under simple entailment, it is possible to proceed by
> >> finding a mapping from blank nodes and variables in the basic graph
> >> pattern to terms in the graph being matched; a pattern solution is
> >> then a mapping restricted to just the variables, possibly with blank
> >> nodes renamed. Moreover, a uniqueness property guarantees the
> >> interoperability between SPARQL systems: given a graph and a basic
> >> graph pattern, the set of all the pattern solutions is unique up to
> >> blank node renaming."
> >
> > This is a claim, not a theorem (with proof).
> Sure :-)
> Stay tuned for the explicit proof.

Enrico, you do not mean to imply that the RDF Data Access Working Group
plans to deliver a proof, do you? I'm not aware of any such plans.

Please keep in mind that this public-rdf-dawg-comments@w3.org mailing
list is a place for responses on behalf of the RDF Data Access Working
Group; it's best to be very clear when you're acting not on behalf
of the WG but on your own behalf, lest readers get the wrong impression.

> --e.
Dan Connolly, W3C http://www.w3.org/People/Connolly/
D3C2 887B 0F92 6005 C541  0875 0F91 96DE 6E52 C29E
Received on Wednesday, 22 March 2006 17:19:46 UTC

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