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RE: Restrictions on existence of attributes?

• To: "'Eric van der Vlist'" <vdv@d...>,<xml-dev@l...>
• Subject: RE: Restrictions on existence of attributes?
• From: "Michael Kay" <mike@s...>
• Date: Thu, 6 Jul 2006 07:56:52 +0100
• In-reply-to: <1152167621.6016.85.camel@l...>
• Thread-index: AcagxjbMNPc6xZ7KS5K2iWeNfaYFAgAAl6EQ

> 
> 2) Derivation by restriction:
> ++++++++++++++++++++++++++++
> 
> 
> Equivalent RELAX NG (compact syntax):
> 
> RestrictedType =
>     element FirstName { xsd:token },
>     element LastName { xsd:token }
> 

Interesting that RELAX NG, like XML Schema, requires a restricted type to
spell out all the components that are to be included in the subtype, rather
than inheriting them by default: which is something of a maintenance
nightmare. I've always wondered why XML Schema is asymmetric here as regards
elements vs attributes: with attributes you say which ones to leave out of
the subtype, with elements you say which ones to include.

Michael Kay
http://www.saxonica.com/

PS: does anyone know how to get rid of monmason?

• References:
  • Re: Restrictions on existence of attributes?
    • From: Eric van der Vlist <vdv@d...>

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