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Re: RDF vs the rest of the world

From: Franco Salvetti <Franco.Salvetti@Colorado.EDU>
Date: Fri, 20 Sep 2002 20:54:14 -0600 (MDT)
To: Ashley Yakeley <ashley@semantic.org>
Message-ID: <1032576854.3d8bdf568d52b@webmail.colorado.edu>
Cc: Franco Salvetti <Franco.Salvetti@Colorado.EDU>, RDF Interest Group <www-rdf-interest@w3.org>


      Range and Domain are not constraints means that if you have an object
*obj* that is an instance of the class A and you have a property P that has
domain the class B and you say that (obj P y) automatically you have that obj is
an istance of the class B. You do not have an error like : "type missmatch for
object obj".

      obj inherits from both class A and B but there is just one assertion with
      rdf:type and subject obj.

      Does it make sense?

      Franco :)

Quoting Ashley Yakeley <ashley@semantic.org>:

> At 2002-09-20 18:59, Franco Salvetti wrote:
> >The rande/domanin are not constraint anymore,
> > but just way to declare the type of a variable.
> The type of a value in RDF is a constraint, isn't it?
> -- 
> Ashley Yakeley, Seattle WA

Received on Friday, 20 September 2002 22:54:16 UTC

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