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   Re: [xml-dev] The triples datamodel -- was Re: [xml-dev] SemanticWeb per

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At 9:16 PM -0400 6/3/04, Mark Baker wrote:

>I agree, it's not the triples themselves which are key.  I believe that
>what's key is a data model which presents information in discrete
>"packets" so that I can, for example, add a new packet without impacting
>the ability of deployed software to extract other packets.  Triples do
>that, but so can other models.  So, in response to Elliotte, this is
>why vanilla XML (+Namespaces+URIs) isn't sufficient.

I was with you until the last sentence. I see no reason why 
plain-vanilla XML+Namespaces can't do this. You make the claim on 
that " additional properties can be added without impacting the 
meaning of the former interpretation, i.e. potentially breaking some 
application somewhere. An XML app can't assume this; it might be 
breaking its validity against some schema someplace." Simply put, I 
don't care if adding additional information breaks some schema 
someplace. Properly designed XML applications ask whether a document 
contains the information need. They do not ask whether the document 
contains additional information they don't need or care about. I 
agree that XML document should be Extensible.  I disagree that plain 
vanilla XML documents aren't extensible. Validity is not required.


   Elliotte Rusty Harold
   Effective XML (Addison-Wesley, 2003)


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