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Not historical but applicable. I can build with XML plus DTDs and never touch an xmlns declaration. This may be a point of view with regards to designing a document vs implementing XML. I include DTDs because they are in XML 1.0, not documented separately which is the case for namespaces. That may be historical but the case is that one can do a lot of work without using namespaces. Logic is never pure. You have to pick the conditions. Logic is mechanical after that. The politic is choosing the choices. XML Base and XInclude? Good questions. I put them in the same layer with namespaces. Where would you put them? Len http://www.mp3.com/LenBullard Ekam sat.h, Vipraah bahudhaa vadanti. Daamyata. Datta. Dayadhvam.h -----Original Message----- From: Eric van der Vlist [mailto:vdv@d...] Sent: Friday, June 15, 2001 10:37 AM To: xml-dev@l... Subject: Re: XML 1.0 is simple. was: RE: almost four years ago.... "Bullard, Claude L (Len)" wrote: > > Core - XML 1.0 (well-formed and DTD validation) > > Extensibility options: > > o Aggregation - XML 1.0 + Namespaces > > o Modeling - XML 1.0 + Namespaces + XML Schemas > > o System - XML application languages such as RDDL It would be nice if the specifications were modular instead of spagheti structured, but DTDs are macroinstructions + include + modeling... And I personnaly find namespaces being more "basic" or "core" than the modeling part of DTDs! Namespaces are not something that you bring afterward, they are intrusive and change the syntax and meaning of your documents. In contrast, you can add or change DTDs without changing your documents (except maybe the doctype declaration). The modeling part of XML DTDs appears to be more peripheral than namespaces. I think that your split is based on historical considerations more than on pure logic ;=) ! BTW, where do we locate XML Base and XInclude ? Eric > Len Bullard > Intergraph Public Safety > clbullar@i... > http://www.mp3.com/LenBullard > > Ekam sat.h, Vipraah bahudhaa vadanti. > Daamyata. Datta. Dayadhvam.h > -- Pour y voir plus clair dans la nebuleuse XML... http://dyomedea.com/formation/ ------------------------------------------------------------------------ Eric van der Vlist http://xmlfr.org http://dyomedea.com http://xsltunit.org http://4xt.org http://examplotron.org ------------------------------------------------------------------------ ------------------------------------------------------------------ The xml-dev list is sponsored by XML.org, an initiative of OASIS <http://www.oasis-open.org> The list archives are at http://lists.xml.org/archives/xml-dev/ To unsubscribe from this elist send a message with the single word "unsubscribe" in the body to: xml-dev-request@l...
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