A simple question on RDF Querying ... from Greg Karvounarakis on 1999-12-07 (www-rdf-interest@w3.org from December 1999)

From: Greg Karvounarakis <gregkar@csi.forth.gr>
Date: Tue, 7 Dec 1999 18:02:29 +0200 (EET)
To: RDF Interest Group <www-rdf-interest@w3.org>
Message-Id: <Pine.OSF.3.96.991207175752.21973A-100000@pleiades.csi.forth.gr>

Hello everybody.
I would like to have your opinion/comments on the following question:

Suppose that I have an RDF schema like:

                [C1] ------p1------> [C2]
                 /\        /\         /\
                 ||        ||         ||
                 ||        ||         ||
                 ||        ||         ||
                [C3] ------p2------> [C4]

p2: subPropertyOf p1
C3, C4: subClassOf C1,C2 respectively.

If a query requests the from and to values of the property p1
(metadata instances), do you believe that the from and to values
of its subProperty (p2) should also be returned?
I would also appreciate any examples where the one case is 
preferrable over the other (based on possible applications that
you may have in mind).

Thanx in advance
Greg

Received on Tuesday, 7 December 1999 11:02:53 UTC