[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: DTD vs Schema
David Megginson scripsit: > I still haven't had time to give XSchema a proper going-over, but from > what I've seen, XSchema and DCD are not competing for the same > territory: > > - XSchema defines an instance-based representation of DTDs > - DCD defines an alternative to DTDs Just the opposite: it is a stated requirement of DCD that it represent everything a DTD can, whereas XSchema long ago abandoned that requirement. In particular, XSchema does not handle entities (someday, information about unparsed entities may be added). DCD instances are by intention RDF metadata, though the current version has both intentional and unintentional deviations from the current RDF Model & Syntax draft. DCD also has a concept of "datatypes" that identify the internal (non-XML) syntax of #PCDATA. XSchema has an emphasis on reusability, although the actual mechanism of reuse hasn't been designed, pending the next XLink draft. Personally, I would like to see a convergence between the two, as I think they *are* competing for the same territory. The DCD concept of RDF-compliance is IMHO the Right Thing, whereas XSchema has a bit better thought out view of what to include. -- John Cowan http://www.ccil.org/~cowan cowan@c... You tollerday donsk? N. You tolkatiff scowegian? Nn. You spigotty anglease? Nnn. You phonio saxo? Nnnn. Clear all so! 'Tis a Jute.... (Finnegans Wake 16.5) xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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