[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: maps
> I think that XML Schema part 2 should not have been a collection of > types and facets, but a language for the creation of datatype libraries, > and ideally a mechanism for registering those datatype libraries as > well. But I've ranted on the topic, at rather more length, elsewhere > (see xml.com, if you're interested). Absolutely! But don't think ranting will do the trick. James Clark outlined the problems with blessed types in his XML 2001 keynote. I've railed against them and wished for more generic facilities for constraint expression rather than a monolithic type-library-by-committee. I used irrational numbers as my example, picking a purposefully tricky case. Simon has brought up the more practical geospatial example. But the folks who could clean up this mess mostly just take in all the warnings and blithely respond "sorry we had to satisfy OO and relational data type needs from our chartered requirements". And so the Titanic lumbers on. Nought but the iceberg itself will alter its course. -- Uche Ogbuji Fourthought, Inc. http://uche.ogbuji.net http://4Suite.org http://fourthought.com Track chair, XML/Web Services One Boston: http://www.xmlconference.com/ Basic XML and RDF techniques for knowledge management, Part 7 - http://www-106.ibm.com/developerworks/xml/library/x-think12.html Keeping pace with James Clark - http://www-106.ibm.com/developerworks/xml/libra ry/x-jclark.html Python and XML development using 4Suite, Part 3: 4RDF - http://www-105.ibm.com/developerworks/education.nsf/xml-onlinecourse-bytitle/8A 1EA5A2CF4621C386256BBB006F4CEC
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