W3C home > Mailing lists > Public > www-rdf-interest@w3.org > August 2003

literal vs. resource

From: Richard H. McCullough <rhm@cdepot.net>
Date: Mon, 18 Aug 2003 11:20:45 -0700
Message-ID: <002e01c365b6$4b969980$bd7ba8c0@rhm8200>
To: "McCool, Rob" <robm@robm.com>
Cc: "www-rdf-interest at W3C" <www-rdf-interest@w3.org>, "KR-language" <KR-language@YahooGroups.com>

Both RDF & OWL seem to treat this like 
a "syntactic" issue. i.e., I don't think 
there's any real semantics behind the choice 
of literal or resource.

But it does make a difference in MKR.

The OWL distinction is 
    DatatypeProperty vs. ObjectProperty
which roughly corresponds to 
    attribute vs. relation
in MKR.

Basically, an attribute is a property of a
single entity, while a relation (my narrow
sense of the word) is a property involving
two or more entities.  Here are some simple

    attribute: length, mass, color
    relation: before, above, father

I make the same distinction between actions
and interactions.  For example.

    action: move, eat, speak
    interaction: causality, concert, conversation

Dick McCullough
knowledge := man do identify od existent done;
knowledge haspart proposition list;
Received on Monday, 18 August 2003 14:26:52 UTC

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