Re: Please no UOM (was Re: maps)
Joshua Allen scripsit: > > (Not that anyone here is advocating this, but just in case...) > > Regular expressions that enforce syntactic patterns for particular > units of measure are fine, but I would strongly caution against trying to > assign schema constraints based on the actual values (other than range > constraints to specify valid values, which I would classify as regular > expressions anyway). Even worse are co-occurence constraints on the > values, and worst of all are constraints that involve UOM translations. Well, I think the rest of your rant is quite convincing on the matter of translations, but I don't see where your argument against co-occurrence constraints comes from, especially for quantized units. -- John Cowan <jcowan@r...> http://www.reutershealth.com http://www.ccil.org/~cowan Yakka foob mog. Grug pubbawup zink wattoom gazork. Chumble spuzz. -- Calvin, giving Newton's First Law "in his own words"
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