- From: Peter F. Patel-Schneider <pfps@research.bell-labs.com>
- Date: Wed, 05 Mar 2003 09:18:01 -0500 (EST)
- To: costello@mitre.org
- Cc: www-rdf-logic@w3.org
From: "Roger L. Costello" <costello@mitre.org> Subject: "Define" a class, or "Declare" a class? "Define" a property, or "Declare" a property? Date: Wed, 05 Mar 2003 08:06:43 -0500 > > Hi Folks, > > XML Schema distinguishes between "defining" and "declaring", e.g., > you "define" types, but you "declare" elements. Does OWL make such a > distinction? That is, do you "define" a class, or do you "declare" a > class? Do you "define" a property, or do you "declare" a property? > > Thanks! /Roger Well, OWL does *not* have a notion of the definition of anything. OWL DL does require a division of properties between object-valued properties and data-valued properties. You might consider the part of an OWL DL ontology that provides this information as declarations of OWL properties. In summary, however, the answers to your questions are NO and NEITHER peter
Received on Wednesday, 5 March 2003 09:18:14 UTC