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

david at megginson.com david at megginson.com
Fri Nov 27 19:25:13 GMT 1998

Murray Maloney writes:

 > 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.

No, I think that Murray has misunderstood -- I'm trying to manage
expectations by explaining that the XML data-typing problem is far
more difficult than a typical anglophone North American SQL specialist
might expect, and that the potential rewards are smaller than people
might hope.

I will happily use data-typing once it's approved, but I don't imagine
that it will generate more than a tiny, incremental gain in my
productivity or in the integrity of my information (with database
programming, you always end up writing the hard validations by hand

And, of course, any data-typing standard blessed by the XML-Syntax WG
will have to be fully Internationalised -- a standard that works only
for English-speaking Perl hackers in the Silicon Valley needs to be
designed by Perl hackers in the Silicon Valley, not by the W3C.

All the best,


David Megginson                 david at megginson.com

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