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I thought someone else would note that the DTD <!ELEMENT MY-NON-BOOLEAN ((TRUE | FALSE)?, (TRUE | FALSE))> is nondeterministic and therefore not allowed by XML Schema. Or does it matter? I guess if the point is that XML doesn't map ideally to objects, then a particular choice of schema language is moot. But binding XML to object data (and back) seems in general easier than, say, porting object data to relational models (and plenty of people are still doing that). What is the argument? That XML should be XML, objects should be objects, and database tables should remain tables? But they won't stay in their little respective corners! If the argument is instead that all data model mappings should be carefully crafted on a case-by-case basis, then personally I'm very dissatisfied with that prescription. The natural order of things is that complexity breeds simplicity by necessity. Did I miss an alternative solution somewhere?
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