• To: "Rick Jelliffe" <ricko@a...>,<xml-dev@l...>
• Subject: RE: Please no UOM (was Re: maps)
• From: "Joshua Allen" <joshuaa@m...>
• Date: Mon, 5 Aug 2002 16:49:37 -0700
• Thread-index: AcI8RvBPu/a6VVEXR0+PHZrwXYZkrwAk0Prg
• Thread-topic: Please no UOM (was Re: maps)

> > These types of constraints tend to fall into the realm of "business
> > rules", and in no way belong in a data schema language
> 
> It has been standard practise from the beginning of markup languages
> to accept multiple units of measurement, such as inches, pica, cm.
> 

Right.  Serializing unit-of-measure values lexically in markup is fine.
It's when people start setting constraints on the actual value space
that the problems come in.

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