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RE: fundamental facets - inquiry from the XMLSchemaWorking Gro

• To: Dare Obasanjo <dareo@m...>
• Subject: RE: fundamental facets - inquiry from the XMLSchemaWorking Group
• From: Eric van der Vlist <vdv@d...>
• Date: Fri, 10 Oct 2003 18:36:40 +0200
• Cc: michael.h.kay@n..., xml-dev@l...
• In-reply-to: <830178CE7378FC40BC6F1DDADCFDD1D1D51621@R...>
• Organization: Dyomedea (http://dyomedea.com)
• References: <830178CE7378FC40BC6F1DDADCFDD1D1D51621@R...>

On Fri, 2003-10-10 at 18:27, Dare Obasanjo wrote:
> All of these problems don't matter as much if all you are designing is a validation language. They mainly become problematic when you want to perform operations on these types either in a programming or query language. 

Really?

How do you constrain a date in the Japanese calendar or a complex number
without having either hardcoded these types in your type system or
defined a system which lets you define new primitive datatypes?

Eric

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