RE: How to do numeric validations in DTD

Subject: RE: How to do numeric validations in DTD
From: Mike Brown <mbrown@xxxxxxxxxxxxx>
Date: Thu, 20 Jan 2000 13:14:06 -0700
> <personalinfo>
> 	<ssn>123456789</ssn>
> </personalinfo>
> How to write a DTD, which validates the value of SSN as numeric.

This doesn't have anything to do with XSLT and it would be better to ask on
the comp.text.xml newsgroup.

DTDs do not allow for number as a real datatype. The closest you can get in
element content is to require that it be PCDATA. Now that the XML Schema
specs are solidifying, validating XML parsers are beginning to optionally
use XML Schema documents instead of DTDs for validation, and I believe
numeric data requirements can be enforced via those documents.

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