[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: And the DTD says, "I'm NOT dead yet!!"
"Sean B. Palmer" <sean@m...> writes: > > That makes it easy to explain why the DTD > > is there even if not why it is non-normative. > > That still makes no sense to me. > > I'm quite sure what you're implying there...DTDs are non normative? Huh? > Forgive my ignorance, but I thought that the DTD format was laid out in the > SGML ISO specification...probably not. It's the DTD for Schemas which is non-normative _as far as the Schema_ _spec is concerned_. That is, we choose to make the DTD non-normative to avoid having to rule on questions of the form The Schema for Schemas says X, the DTD for Schemas says X', which should I pay attention to? By making the D4S non-normative, we can just say "if you think there's a conflict, you're probably wrong, but it doesn't matter, just go with the S4S". Also, at the margin, there are valid schema documents which are schema-valid wrt the S4S but not XML 1.0-valid wrt the D4S, namely those which use two or more prefixes for the XML Schema namespace. ht -- Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh W3C Fellow 1999--2001, part-time member of W3C Team 2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440 Fax: (44) 131 650-4587, e-mail: ht@c... URL: http://www.ltg.ed.ac.uk/~ht/
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