• To: "Emmerich, Martin" <Martin.Emmerich@o...>
• Subject: Re: Schema: defining occurences in choices?
• From: Jeni Tennison <jeni@j...>
• Date: Wed, 18 Dec 2002 19:00:39 +0000
• Cc: xml-dev@l...
• Envelope-to: xml-dev@l...
• In-reply-to: <33544B856F54654F8011A71EC08F7F443A1BF3@e...>
• Organization: Jeni Tennison Consulting Ltd
• References: <33544B856F54654F8011A71EC08F7F443A1BF3@e...>
• Reply-to: Jeni Tennison <jeni@j...>

Hi Martin,

> What I need are several rules like:
> name = "value1" --> there must be a "subcontent1" with
> "subchoice1a", annother "subcontent1" with "subchoice1b" can occur
> and "subcontent2" can occur.
>
> I understand your mail that that is not possible to specify such
> constraints in plain schema. Am I correct? Do I always need an
> external rule engine like Schematron or Relax NG for that?

Yes. W3C XML Schema is limited in this regard.

Cheers,

Jeni

---
Jeni Tennison
http://www.jenitennison.com/

• References:
  • RE: Schema: defining occurences in choices?
    • From: "Emmerich, Martin" <Martin.Emmerich@o...>

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