Re: Attribute Order
> The tough constraint is that the 'units', 'min', 'max', and > 'default' attributes must be dimensionally compatible. > So for example > > <field > name = "OMEGA" > units = "radian/sec" > min = "0 deg/sec" > max = "1000 rpm" > default = "10 hz" > > > > would be legal, but 'units = "meter/sec", default="5 feet"' > would not be. > > I don't know of any schema language that can enforce this > constraint (and if there were one, I doubt that I'd want > to use it :-). We use a combination of DTDs, Schematron, > and Tcl for validation. I think you can check these using Schematron. You can divide up an attribute value into tokens and treat the tokens as numbers and co-constrain them. Cheers Rick Jelliffe
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