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   Re: [xml-dev] taking XML seriously (was RE: [xml-dev] XML=WAP? AndDOA?)

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1/14/2002 10:56:44 AM, "Simon St.Laurent" 
<simonstl@simonstl.com> wrote:

>There is definitely a mismatch between how markup describes 
>informationand the ways in which other branches of computing 
>expect information. 

Sean McGrath has an interesting article on XML 2001 that 
makes a similar point
"I think my abiding memory of XML 2001 will be as the 
conference at which the data- heads and the doc-heads finally 
agreed to call it quits and go their separate ways.
...Document people see the world in terms of XML encoded 
information flowing through systems, perhaps undergoing 
transformations and validations at various stages along the 
way. Data people see rigid XML structures flowing over the 
wire between well-defined end-points that encode all the 
really interesting stuff in "business logic" at the end- 

Another XML 2001 presentation by Stephen Kirkham made similar 
"In the Object oriented world data is a second class citizen. 
Objects control access to and provide operations on data. ...
XML however starts to reverse the clock, it represents a 
change in course back to a more data centric world, one in 
which data has a life of it's own. Data has effectively 
broken free of its object boundaries"

These various distinctions -- Markup vs Mainstream 
dataprocessing, Doc-heads vs Data-heads, Data-centric vs 
Object-centric, and maybe my Loosely-Coupled vs Tightly 
Coupled -- are pointing to many of the same things.    I 
don't know that I agree with Sean that the two camps have 
called it quits and are going their separate ways, but I 
think it is very important to understand that these are very 
different use cases for XML, and one reason why we have a 
tendency to talk past each other when these subjects come up 
on xml-dev.


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