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Re: defn variable vacuuous

From: Dan Connolly <connolly@w3.org>
Date: Mon, 06 Sep 2004 08:45:53 -0500
To: Andy Seaborne <andy.seaborne@hp.com>
Cc: RDF Data Access Working Group <public-rdf-dawg@w3.org>
Message-Id: <1094478352.6086.156.camel@dirk>

On Mon, 2004-09-06 at 07:26, Seaborne, Andy wrote:
> Dan Connolly wrote:
> >  -- http://www.w3.org/2001/sw/DataAccess/rq23/#basicpatterns
> """
> A variable is a placeholder in a query pattern for possible RDF terms.
> A variables is asscoiated with at most one RDF term in a query solution.
> """
> which disallows multivalue variables in a single query solution.

I think that constraint is expressed elsewhere, though I haven't
transcribed the definition of query solution yet. I think this
definition is still vacuous.

> Just saying it as text misses the formal nature of variables.

The formal nature of variables is captured by the other definitions.

I don't see why you want a specific definition for the term
variable in addition to the other definitions that use the
term variable in constrained ways.

Dan Connolly, W3C http://www.w3.org/People/Connolly/
Received on Monday, 6 September 2004 13:45:46 UTC

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