- From: Libby Miller <Libby.Miller@bristol.ac.uk>
- Date: Fri, 14 Feb 2003 16:09:04 +0000 (GMT)
- To: www-rdf-rules@w3.org
hi all As part of the EC SWAD-Europe project [1], I'm writing a report on query languages for RDF. Rather than repeat lots of excellent work (e.g. [2][3][4]), I've decided to focus on testcases for RDF query. I started a thread on query testcases on this list a couple of weeks ago. A summary is here http://esw.w3.org/t/view/ESW/RDFQueryTestCases I've started a wiki page about RDF query testcases requirements: http://esw.w3.org/t/view/ESW/RDFQueryTestcasesRequirements I've jotted down some things that I think are required, based on a RDF query testcases manifest format I've been using for query testcases http://swordfish.rdfweb.org/rdfquery/tests/query-results-manifest.rdf and additions to that suggested by Alberto Reggiori. These are just some rough notes, and before I continue I'd like feedback and input from the community. The main issue for me is how to express the query itself. My inclination is to try and express queries as graphs with parts missing, that is, to interpret an RDF graph as a query, as Jos de Roo suggested [5]. I think this would give us one big win, which is that we could ignore the syntactic differences between several very similar query languages for RDF (although this will by no means encompass all RDF query languages). Plus of course, we get the query parser for free. For a next step with the requirements, we could have a meeting on IRC to discuss requirements for RDF query testcases, if enough people thought it was an interesting direction to go in at this stage. Irc meetings have been interesting and effective for RDF calendar [6]. I would suggest sometime in the week of 24th February, maybe Thursday 27th at 17:00 GMT. What does everyone think? any takers for a meeting? cheers Libby [1] http://www.w3.org/2001/sw/Europe/ [2] http://139.91.183.30:9090/RDF/publications/tr308.pdf [3] http://www.w3.org/2001/11/13-RDF-Query-Rules/ [4] http://rdfstore.sourceforge.net/2002/06/24/rdf-query/ [5] http://lists.w3.org/Archives/Public/www-rdf-rules/2003Jan/0004.html [6] http://www.w3.org/2002/12/cal/
Received on Friday, 14 February 2003 11:11:16 UTC