W3C home > Mailing lists > Public > xmlschema-dev@w3.org > May 2002

Re: <length> = a real number plus a unit qualification

From: <noah_mendelsohn@us.ibm.com>
Date: Tue, 21 May 2002 09:59:26 -0400
To: Margarita Isayeva <isayevam@yahoo.com>
Cc: xmlschema-dev@w3.org
Message-ID: <OF35985ADF.FF70EC99-ON85256BC0.004E7683@lotus.com>
This has been considered many times, but it's a subtle business. 
Physicists want units (Angstroms), printers want units (picas), city 
planners want units (acres), and that's just for linear measurements.  We 
have an extensible type system.  For now, the hope is that domain experts 
will (separately or together) promote their own standards. 

Noah Mendelsohn                              Voice: 1-617-693-4036
IBM Corporation                                Fax: 1-617-693-8676
One Rogers Street
Cambridge, MA 02142

Margarita Isayeva <isayevam@yahoo.com>
Sent by: xmlschema-dev-request@w3.org
05/21/02 01:26 AM

        To:     xmlschema-dev@w3.org
        cc:     (bcc: Noah Mendelsohn/Cambridge/IBM)
        Subject:        Re: <length> = a real number plus a unit qualification

Shouldn't units be a part of XML Schema? They are more
fundamental facets of data than float/double
artificial dichotomy. Is anyone aware of any W3C
activity regarding adding units to Schema specifications?

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Received on Tuesday, 21 May 2002 10:16:38 UTC

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