• To: Kenneth Stephen <marvin.the.paranoid@g...>
• Subject: Re: Is this constraint expressible in XML Schema?
• From: Bob Foster <bob@o...>
• Date: Tue, 08 Feb 2005 14:30:14 -0800
• Cc: XML Developers List <xml-dev@l...>
• In-reply-to: <7e3b51b05020814132bafcb1@m...>
• References: <7e3b51b05020814132bafcb1@m...>
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Kenneth Stephen wrote:
 >     I want to express the following constraint using XML schema :
 >
 >     An unbounded sequence of (A or B) elements which can contain at
 > most n instances of A.
 >
 >     To illiustrate, I set n = 2. In that case, BABBBBBABBB is valid.
 > So is AABB .  BABABA is not valid because there are more than 2 A
 > elements in it.

No can do. Try Schematron.

Bob

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