- From: Steve Harris <S.W.Harris@ecs.soton.ac.uk>
- Date: Thu, 6 May 2004 19:06:26 +0100
- To: public-rdf-dawg@w3.org
On Thu, May 06, 2004 at 12:52:40 -0500, Kendall Clark wrote: > Requirement > ----------- > It should be possible to query the RDFS structure of an RDF graph to find, > for example, the parents and instances of a class or the class tree. > > Discussion > ---------- > I'm not sure whether this comes down, in the end, to a semantic requirement > or just a request for sugar for a particular kind of query; but what my > users need (and we have implemented in a really ugly, API munging way) is > the ability to ask for all the instances of a class, all the parents of a > class, and so on. Being able to do these queries, and being able to do them > "easily" (yes, I know, untestable, but still...) is a real requirement for us. Isn't that a question of what inference your RDFS engine supports? If you do RDFS then (?x <rdfs:subclassOf> ?y) will give you all the superclasses of ?y in ?x. - Steve
Received on Thursday, 6 May 2004 14:06:35 UTC