- From: Dan Connolly <connolly@w3.org>
- Date: Thu, 07 Apr 2005 09:03:01 -0500
- To: Adrian Walker <adrianw@snet.net>
- Cc: public-rdf-dawg-comments@w3.org, www-rdf-rules@w3.org
On Tue, 2005-04-05 at 09:55 -0400, Adrian Walker wrote:
> Dan --
>
> How many of the 14 test questions in [1] does the current SPARQL spec cover ?
Good question. I took a stab at it and discussed it with the WG...
http://lists.w3.org/Archives/Public/public-rdf-dawg/2005AprJun/thread.html#23
I think the answer is: the current design for SPARQL
supports 10 directly, and it can be layered on an inference
mechanism to support the Recursion and Entailment tests.
Y 1 Path Expression
Y 2 Optional Path
Y 3 union
Y 4 difference
N 5 Quantification
N 6 Aggregation
N* 7 Recursion
Y 8 Reification
Y 9 Collections and Containers
(though the test doesn't really test collection access
very well, and SPARQL has no particular support
for collections and containers)
Y 10 Namespace
Y 11 Language
Y 12 Lexical Space
Y 13 Value Space
N* 14 Entailment
> I ask, because it's rather easy to do that test set in an end-user-friendly
> way with rules [2].
Interesting.
> Cheers, -- Adrian
>
> [1] A Comparison of RDF Query Languages
> by Peter Haase, Jeen Broekstra, Andreas Eberhart, and Raphael
> Volz
> http://www.aifb.uni-karlsruhe.de/WBS/pha/rdf-query
>
>
> [2] http://www.reengineeringllc.com/demo_agents/RDFQueryLangComparison1.agent
--
Dan Connolly, W3C http://www.w3.org/People/Connolly/
D3C2 887B 0F92 6005 C541 0875 0F91 96DE 6E52 C29E
Received on Thursday, 7 April 2005 14:03:04 UTC