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

Re: RDF -- venn diagram for resources, literals, properties, statements?

From: Richard H. McCullough <rhm@cdepot.net>
Date: Sun, 27 Apr 2003 15:55:32 -0700
Message-ID: <000d01c30d10$3ebedf00$bd7ba8c0@rhm8200>
To: "Waqar Hasan" <hasan@dbwizards.com>, <www-rdf-interest@w3.org>
The answers are:
1. false
2. true
3. false
4. true

The relevant taxonomy is
Resource
    Literal
    Property
    Statement
In this taxonomy, the species are mutually exclusive, 
but not exhaustive.

For further explanation, I'm writing up some notes on
subClassOf inferences, which will be available 
tomorrow at
http://rhm.cdepot.net/doc/properSubClassOf.html
============ 
Dick McCullough 
knowledge := man do identify od existent done;
knowledge haspart proposition list;

  ----- Original Message ----- 
  From: Waqar Hasan 
  To: www-rdf-interest@w3.org 
  Sent: Sunday, April 27, 2003 2:33 PM
  Subject: RDF -- venn diagram for resources, literals, properties, statements?


  I am trying to understand the Venn diagram for the following sets
  used in the RDF data model (http://www.w3.org/TR/1999/REC-rdf-syntax-19990222/ Section 5)

  1. Resources
  2. Literals  
  3. Properties (proper subset of resources)
  4. Statements 

  I suspect the following are true and would appreciate either pointers to what in the spec makes them true or counter-examples:

  (a) No literal is a resource 

  (b) No property is a statement 

  (c) Some statements are resources others are not.

  (d) No literal is a statement 

  Thanks,

  - Waqar Hasan


   

    
Received on Sunday, 27 April 2003 18:56:32 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Monday, 7 December 2009 10:51:58 GMT