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   Re: [xml-dev] Re: Are the publishing users happy? Why not?

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On Tuesday 18 February 2003 05:35 pm, Bullard, Claude L (Len) wrote:
> Ok, that is a deeper issue.  I am assuming
> the expert designed the schema for the
> customer, not that he gave them one from
> a standard set.   It depends on the tool
> as to how useful that is as an editing
> hint.
> Or did I misunderstand your point?

Just from an information modeling perspective, my point was simply that 
namespaces really don't buy you much at all. As I've said in the past, I've 
never really needed namespaces, though the prefix convention is at times 
convenient. For text manipulation, they're just a little sugar and not much 

Now the real justification seems to be in "embedding" and having tools 
intelligently handle content based on the namespace. Assuming an editing 
application, the goal is (apparently) for the application, when it sees 


to somehow, automagically, connect that to a particular schema that is then 
used to control how I can edit the document.

First of all, the mechanism for automagically doing things like this has not 
yet been standardized. We have URI's associated with namespaces, but we're 
all aware of the huge debates surrounding "what is at the end of the rainbow" 

Second, even if we said that, at the end of a namespace URI, there is *always* 
the appropriate schema (or RelaxNG, or schematron). I may, or may not *want* 
the system to automagically do things like this. After all, I might be a 
"power user", or I might want to bind to a particular *version* of the 

All this implies (to me anyway) that there should be some control over the 
mapping passed on to users. Now if the mapping is based on namespace URI's, 
why couldn't it be based on an XPath or something suchlike? Then I could say

  nikon:* || //*[manufacturer="Nikon"]  http://www.foo.com/camera.rng

This obviously also touches on packaging... and is really an old idea in many 
ways. Essentially, this is about providing *mechanisms* to build data-driven 



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