Define a property to have an EMPTY range ... use owl:Nothing? from Roger L. Costello on 2003-05-14 (www-rdf-interest@w3.org from May 2003)

From: Roger L. Costello <costello@mitre.org>
Date: Wed, 14 May 2003 10:30:35 -0400
To: www-rdf-interest@w3.org
CC: "Costello,Roger L." <costello@mitre.org>
Message-ID: <3EC2530B.E50A1DB3@mitre.org>

Hi Folks,

Oscar Corcho sent me an interesting idea - use owl:Nothing to represent
EMPTY, e.g., 

    <rdf:Property rdf:ID="secret">
        <rdfs:domain rdf:resource="#Document"/>
        <rdfs:range rdf:resource="&owl;Nothing"/>
    </rdf:Property>

A very interesting idea!  Are there any drawbacks to this?  Does it
achieve the desired result of requiring secret to have an EMPTY range,
e.g.,

    <Document>
        <secret/>
    </Document

/Roger

Received on Wednesday, 14 May 2003 10:30:49 UTC