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RE: new W3C CDF specs (XHTML +SVG + SMIL +XForms) --- RDF/XML opportunity?

From: Mark Birbeck <mark.birbeck@x-port.net>
Date: Sat, 10 Sep 2005 16:19:17 +0100
Message-ID: <301FE53A-2FE4-4ADE-B60D-B5DB61DF886B@S009>
To: "'Bjoern Hoehrmann'" <derhoermi@gmx.net>
Cc: <public-rdf-in-xhtml-tf@w3.org>, <dean@w3.org>

Bjoern,

> Also note that SVG 
> does not use RDF/XML for meta data, unlike XHTML 1.x or XHTML 
> 2.x SVG is an extensible format and you are free to decide 
> how to encode additional information in SVG graphics...

Just because you can use any language you like, doesn't make it extensible.
Since you have no way to know what language is being used, then I don't see
how it could really be called 'extensible'?

Perhaps if there was an attribute to indicate the type of the metadata, you
could say it was extensible. Something like:

  <svg>
    <metadata type="application/rdf+xml">
      <rdf:RDF...
    </metadata>
  </svg>


> ..., you can 
> use RDF/XML, you can use a well-designed "microformat", you 
> can even use Notation3 if you like.

I guess so, although section 21.2 advises the use of XML (although the DTDs
don't seem to enforce it):

  Metadata which is included with SVG content should be specified within
  'metadata' elements. The contents of the 'metadata' should be elements
  from other XML namespaces, with these elements from these namespaces
  expressed in a manner conforming with the "Namespaces in XML"
  Recommendation.

Regards,

Mark


Mark Birbeck
CEO
x-port.net Ltd.

e: Mark.Birbeck@x-port.net
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Received on Saturday, 10 September 2005 15:19:49 GMT

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