Check out the DCD submission
peter at ursus.demon.co.uk
Tue Aug 11 21:29:10 BST 1998
At 09:25 11/08/98 -0700, Tim Bray wrote:
>At 09:21 AM 8/11/98, Peter Murray-Rust wrote:
>>I am primarily concerned with the basic datatypes section 4. I want to use
>>these (or something like them) in CML, healthcare and so on. I shall
>>extract this subset of the document and re-use the concepts in JUMBO2.
>Not now! Everyone agrees that we need datatypes. I expect some cheerful
>& constructive bloodletting in the SIG & WG as to which set of datatypes
>we need. Anybody who invests effort in that set at this time is spinning
It's not a problem :-). The main effort is in getting the validation,
presentation, etc done. To add new datatypes or syntax is relatively
straightforward. And I'm not doing the whole lot, either - just the
commonest ones. And I wouldn't go near the COBOL stuff.
>On the other hand, bearing what you say in mind, I think there may be
>a sane case to be made for decoupling the task of identifying the set
>of datatypes from that of defining the rest of the schema mechanics;
>however we end up specifying the datatypes, the heavy typechecking
>coding will be about the same, and it might be nice to give that a
You yourself came up with XML-TYPE or whatever it was called - about 10
webyears ago. IMO that was nearly a no-brainer and orthogonal to any other
effort - it would have helped other activities since.
And the arguments are unlikely to stray beyond what the precise definition
of some weird type is... I can live without min and max in that spec if it
>>I note that max and min have changed from being content to attributes.
>No! Read the early part of the spec. Per RDF, these things are
>*properties*, which can be given either as elements or attributes.
I admit I haven't given it very much detailed attention. But given that
there are ElementDefs and AttributeDefs and that the latter produce
attributes... But I will read it more carefully. NNTR
Peter Murray-Rust, Director Virtual School of Molecular Sciences, domestic
VSMS http://www.nottingham.ac.uk/vsms, Virtual Hyperglossary
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