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Re: SPARQL: which features now, which features later for RDF Data Access?

From: Patrick Stickler <patrick.stickler@nokia.com>
Date: Mon, 4 Apr 2005 15:43:18 +0300
Message-Id: <5ae0b9f09f177d68c0a9a0cbe82bb358@nokia.com>
To: public-rdf-dawg-comments@w3.org

Hmmm... I don't see a requirement for the query language
to support arbitrary typed literals, stated either explicitly
or subsumed by a requirement for the query language to
allow matching of any RDF triple.

I would think that the more general requirement -- that
the query language allow one to match any RDF triple,
by specification of any of its subject, predicate,
or object.

I know that SPARQL presently provides for arbitrary
typed literals, but it would still be good to see this
requirement spelled out explicitly.

Or perhaps I just missed it...?



On Mar 26, 2005, at 01:20, ext Dan Connolly wrote:

> Thanks for all the careful review and comments on the SPARQL
> drafts, everybody. But several of them are more about
> requirements than design... we should add this feature because
> it's really important... or drop that one because our design
> isn't cooked and we should try again later. So before we claim
> victory (i.e last call) on the design, we'd like to get another round
> of comments on the use cases and requirements...
> RDF Data Access Use Cases and Requirements
> W3C Working Draft 25 March 2005
>         http://www.w3.org/TR/2005/WD-rdf-dawg-uc-20050325/
> Status of This Document
> Since the October 2004 draft of this document, the RDF Data Access
> Working Group has
>       * adopted a WSDL requirement and a sorting objective (see change
>         log for details)
>       * postponed some design issues to a future version due to lack of
>         implementation and design experience (cascadedQueries,
>         accessingCollections)
>       * changed our approach to the Human-friendly Syntax objective 
> (see
>         issue punctuationSyntax and upcoming design document revisions)
> We invite feedback on which features are required for a first version 
> of
> SPARQL and which should be postponed in order to expedite deployment of
> others. Please send comments to public-rdf-dawg-comments@w3.org, a
> mailing list with a public archive.
> This document has been produced by the RDF Data Access Working Group,
> along with three design documents: SPARQL Query Language for RDF, 
> Protocol for RDF, and SPARQL Variable Binding Results XML Format. This
> work is part of the Semantic Web Activity in the W3C Technology &
> Society Domain.
> -- 
> Dan Connolly, W3C http://www.w3.org/People/Connolly/
> D3C2 887B 0F92 6005 C541  0875 0F91 96DE 6E52 C29E
Received on Monday, 4 April 2005 12:49:25 UTC

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