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   Re: A certain difficulty

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  • From: David Megginson <david@megginson.com>
  • To: xml-dev@xml.org
  • Date: 25 Feb 2000 06:17:58 -0500

Mark Birbeck <Mark.Birbeck@iedigital.net> writes:

> I'd forgotten about that aspect of RDF. You've reminded me that
> everyone I've ever met who says they're using RDF is usually just
> using a few DC meta tags in their HTML files.

I haven't met anyone doing that, personally.  As far as I've seen, the 
major RDF implementations are RPMfind, DMoz, and a couple of others
I'm forgetting right now.  No Dublin Core involved in either of them.

> So, to illustrate, if today I want to see all documents where "creator"
> is David Bowie, then today I set "composer" and "author" and "painter"
> to be equivalent.

Actually, there should be no need to do anything like that.  I imagine
a Web of objects (in RDF/DC or otherwise) would look something like

  <megg:Person rdf:about="http://megginson.com/objects/12345">
    <dc:title>David Bowie</dc:title>

  <megg:Song rdf:about="http://megginson.com/objects/54321">
    <dc:title>Space Oddity</dc:title>
    <dc:creator rdf:resource="http://megginson.com/objects/12345"/>

A composer is just the creator of a song, while a sculptor is the
creator of a sculpture.  There's no need to define all of the things
dc:creator can refer to, as long as you explain the kind of
relationship it defines.

All the best,


David Megginson                 david@megginson.com

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