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RE: namespaces (was RE: rss regularis(z)ation)

• To: Bill de hÓra <bill.dehora@p...>
• Subject: RE: namespaces (was RE: rss regularis(z)ation)
• From: "Dare Obasanjo" <dareo@m...>
• Date: Wed, 23 Jul 2003 18:07:18 -0700
• Cc: Bill de hÓra <bill@d...>,"Simon St.Laurent" <simonstl@s...>,<xml-dev@l...>
• Thread-index: AcNRZ4WmhIIk/fWcSUSSznDUeiECjQAF23bw
• Thread-topic: namespaces (was RE: rss regularis(z)ation)

> -----Original Message-----
> From: Bill de hÓra [mailto:bill.dehora@p...] 
> Sent: Wednesday, July 23, 2003 3:12 PM
> To: Dare Obasanjo
> Cc: Bill de hÓra; Simon St.Laurent; xml-dev@l...
> Subject: Re:  namespaces (was RE:  rss 
> regularis(z)ation)
> 
> > 	 
> http://msdn.microsoft.com/library/en-us/dnxml/html/understxml.asp
> 
> 
> Well, you lost me, or maybe I lost you. The mention at all of 
> XML Namespaces has to do with extensibility:
> 
>   'XML is Extensible'

The article doesn't mention extensibility and namespaces in the same breath. In fact the word namespace appears only once in the article and it is when I mention that the XML Infoset has namespace information items. 

> Surely you understand XML. It's not extensible, it's a fixed 
> grammar. I though first you were trying to say:
> 
>   'XML is Extensible with XML Namespaces'
> 
> but 1) that's not XML anymore, 2) whatever it is, it is still 
> not extensible since it's still a fixed grammar. I claimed 
> this yesterday, feel free to refute, or handwave. I suspect 
> you're trying to say:
> 
>   'XML vocabularies are Extensible with XML Namespaces'

Nope, I was trying to say 

    'XML vocabularies are extensible'

Namespaces help in this but are not the be all and end all of the extensibility story of XML vocabularies. 

> but, 3) that's not about XML anymore, that's about 
> vocabualaries (or content models), 4) XML Namespaces don't 
> make vocabularies extensible they just allow the them to be 
> partitioned.

Partitioning is important if multiple parties will be extending your vocabulary. Just look at RSS for examples of where this partitioning has proved useful. 


-- 
PITHY WORDS OF WISDOM 
Any given program, when running, is obsolete.                                                       

This posting is provided "AS IS" with no warranties, and confers no rights. 

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