[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Acronym spaces, namespaces, and authority (was Re: [xml-de
From: "Mike Champion" <mc@x...> > Before you flame me to a crisp, I'm talking about the world as it > exists, contaminated by nearly 20 years of having to deal with > DOS/Windows file extensions, not the world as it could or even > should be. I think things would improve if 1) The namespace URI convention was developed with some kind of version numbering, expressing that the namespace is a superset of the previous one. This decouples processors from the particular version of the namespace, or (more likely) allows schemas to be evolved while keeping the "same" namespace. 2) The notion of "document type" should be brought back, as representing something different from a namespace. A namespace is a vocabulary, a schema is rules for using that vocabulary, a document type is a combination of schemas combined with house-rules, business-rules, characteristic styles, expected usages, _emantics, allowed roots, comment conventions, PI conventions, constraints not expressible with schema languages, localizations, characteristic file extensions, MIME type, controlled vocabularies, and so on. These might mystify people wanting to develop XML in the direction of large databases, but document types should be the bread and butter of XML on the Web. Cheers Rick Jelliffe
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