Why XML data typing is hard (was Re: Internal subset equivalent in new schema proposals?)

[Murray Maloney]

At 07:07 AM 11/27/98 -0500, david at megginson.com wrote:
>I'm not suggesting that a set of simple XML data-typing constraints
>cannot be helpful -- if you're building a database only of Norwegian
>city names, you know that you don't have to deal with Han or Kanji
>(unless, of course, you do such a good job that you decide to
>commercialise your system) -- but coming up with data-type constraints
>that both useful and generalised enough for all XML users across all
>of the major Locales and all of the Unicode character repetoire is
>*very* difficult.

David, I am surprised by this comment.

Essentially you are saying that since
it would be possible to design poorly
with a given set of tools, we should not
provide these design tools.

Doing the hard stuff is what might give 
one product a competitive advantage over
another. Doing it poorly is what should 
cause the market to reject a product.



Murray Maloney, Esq.          Phone: (905) 509-9120
Muzmo Communication Inc.      Fax:   (905) 509-8637
671 Cowan Circle              Email: murray at muzmo.com
Pickering, Ontario 		Email: murray at yuri.org
Canada, L1W 3K6    		

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