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Re: [xml-dev] Lesson Learned: Use namespaces for both markup and data

Would it be sensible for XSD to have a simple type of xs:JCnQName (James 
Clark Notation QName) that accepted '{http://www.aquarium.org}tank' as valid 
input?  Then the JCnQName could be moved out of context without losing 


Pete Cordell
Codalogic Ltd
Interface XML to C++ the easy way using XML C++
data binding to convert XSD schemas to C++ classes.
Visit http://codalogic.com/lmx/ or http://www.xml2cpp.com
for more info
----- Original Message ----- 
From: "Costello, Roger L." <costello@mitre.org>
To: <xml-dev@lists.xml.org>
Sent: Tuesday, August 11, 2009 9:06 PM
Subject: RE: [xml-dev] Lesson Learned: Use namespaces for both markup and 

>> and take the data out of context I get this:
>> aquarium:tank
>> This appears to be richer.

> Prefixes are just prefixes, nothing more then
> a hint/reference to something important (and
> hopefully specifically unique) ... once we
> start thinking there is a shared dictionary of
> what prefixes are,
> instead of a namespace URI isn't this where
> problems start creeping in.

Good point Jim. I should have said:

   When this QName value is taken out of context,
   it does not have less information than a
   non-QName value taken out of context.


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