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Re: Why isn't FunctionalProperty a subClassOf owl:ObjectProperty?

From: Dan Connolly <connolly@w3.org>
Date: 04 Mar 2003 14:37:07 -0800
To: "Roger L. Costello" <costello@mitre.org>
Cc: www-rdf-logic@w3.org
Message-Id: <1046817428.3328.312.camel@jammer>

On Tue, 2003-03-04 at 14:18, Roger L. Costello wrote:
> 
> Hi Folks,
> 
> In the OWL Reference Version 1.0 document it defines TransitiveProperty
> and SymmetricProperty as a subClassOf owl:ObjectProperty.
> 
> On the other hand, it defines FunctionalProperty as a subClassOf
> rdf:Propery.
> 
> What is the reason for this?  Why isn't FunctionalProperty also defined
> as a subClassOf owl:ObjectProperty?  

because then we couldn't model, e.g. string-valued database keys;
e.g. the relationship between U.S. states and strings like "KS".

pls see

5.1 Uniform treatment of literal/data values
http://www.w3.org/2001/sw/WebOnt/webont-issues.html#I5.1-Uniform-treatment-of-literal-data-values

> Thanks!  /Roger
-- 
Dan Connolly, W3C http://www.w3.org/People/Connolly/
Received on Tuesday, 4 March 2003 17:47:12 GMT

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