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Re: RDF IG meeting at W3C Technical Plenary 2001-02-28

From: David Allsopp <dallsopp@signal.dera.gov.uk>
Date: Fri, 09 Feb 2001 09:14:52 +0000
Message-ID: <3A83B50C.FC0C4FF4@signal.dera.gov.uk>
CC: www-rdf-interest@w3.org


Seth Russell wrote:

> > I totally agree - once querying RDF is implemented well, a whole lot of
> > things get much easier. It would be excellent to compare notes with
> > people working in this area.
> 
> Personally I don't believe we want a query language outside of RDF .. we
> want it inside RDF.   In other words we should be able to express a
> question in RDF.  See my proposal [1] for implementing the who, where,
> when, why, what pronouns.
> 
> [1] http://lists.w3.org/Archives/Public/www-rdf-interest/2001Jan/0142.html


If we express queries in RDF, and parse them into a Model, how does the
query engine access them in order to carry out the query?  By querying
the model...?

[ OK, I guess you'd probably only need Model.find(s, p, o), but the
circularity amuses me. 8-) ]

My first concern is that some of the proposed queries expressed in RDF
are pretty much unreadable, and extremely verbose, at least in M&S
syntax, which may partly explain why people tend to go for SQL-like
query syntax, which, after all, just expresses a graph with variables in
a cleaner way.  

(I've been very struck by the similarity between the SQL-like queries,
and N3 - I had a spooky feeling when I was playing around with some RDF
query syntax like N3, then on the same day found the pages on N3 for the
first time!)

Regards,

David Allsopp.

-- 
The peason-molesworth space ship threatened by wild mercurian maths 
masters lies disabled in the onion bed of the kitchen garden. 
Meanwhile in the master's common room, Sigismund arbuthnot the mad 
maths master musters his rhomboids...
Received on Friday, 9 February 2001 04:20:09 GMT

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