[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: A New Hope (was Re: Storing Lots of Fiddly Bits (was Re: What is XML
From: spreitze@p... <spreitze@p...> >Right! I think a significant part of the problem here is that people are realizing that XML's data model is not as expressive as they'd like. For example, XML's entity structure looks like a semi-labelled graph (vertices are labelled (with entity tags) but edges are not labelled), whereas many other data models (e.g., RDF) let you label both the edges and the vertices. HyTime lets you label edges too: anyone can use that (to those people who whinge "but it is too hard" I say "CORBA CORBA CORBA": some things are big and difficult, it doesn't mean they are therefore bad). The question is, should such labelling be part of the language at the lexical level (which XML deals with) or a further layer. It is the old tradeoff that a general purpose system will (probably) be worse at any specific task than a specific system. > It seems to me that one plausible way out of this conundrum is for the XML Schema WG to recognize (1) the need for schemas to be written in terms of more expressive data modelling systems, (2) the need to support a variety of encodings of those data models into XML, and (3) the need for a schema to describe a particular encoding (the one desired for the schema at hand) of the schema's data model into XML. Sounds good. But Mike's comments do betray a wish that XML operated on some other level than the strictly lexical: but it doesn't, except by chance. Rick 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/ and on CD-ROM/ISBN 981-02-3594-1 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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