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  • To: 'Joe English' <jenglish@f...>, xml-dev@l...
  • Subject: RE: Constrain the Number of Occurrences of Elements in your XML Schema
  • From: "Bullard, Claude L (Len)" <len.bullard@i...>
  • Date: Fri, 5 Aug 2005 16:00:50 -0500

Not exactly right.

1.  They weren't dumped.  For XML, there is exactly one.  
No one uses it for anything that I'm aware of because 
XML systems are blithely unaware of it, which is what 
'informative' means in standards.

2. When used, IME, they served as contract vehicles. 
No one read them because only a few people could but 
they were there to tell people what to expect.  At 
least, who to blame.

3. From time to time, here as you are aware, someone 
proposes a requirement that might be met by some 
descendant of the Declaration, but are shouted down 
by "Ickypoo, that's the Declaration come back; handle 
it in your code."

And so it goes.  I don't expect to see XML evolve. 
I do expect to see it hidden away under every more 
abstract layers of code until it becomes irrelevant
and then the whole cycle will begin again.

Nothing declared lasts except the declarative act.

len


From: Joe English [mailto:jenglish@f...]
Sent: Friday, August 05, 2005 3:40 PM

What you advocate is reminiscent of the QUANTITY and CAPACITY
sections of the SGML declaration.  These were a perpetual annnoyance
(the SGML declaration was the first thing that got dumped
when XML was being designed), and as far as I know they
never did anybody any good (i.e., they were never an accurate
indication of how large a document any particular application
could actually handle).

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