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- From: Ronald Bourret <rbourret@ito.tu-darmstadt.de>
- To: "'XML-Dev mail list'" <xml-dev@ic.ac.uk>
- Date: Tue, 6 Jul 1999 15:26:34 +0200
Serrat Jaime wrote:
> I was wondering if the following would be possible in a DTD. Consider:
>
> <!ELEMENT PARENTS (FATHER?, MOTHER?)>
> <!ELEMENT FATHER (CHILD*)>
> <!ELEMENT MOTHER (CHILD*)>
> <!ELEMENT CHILD (SON | DAUGHTER)> <========= Alternative!
> <!ELEMENT SON (#PCDATA)>
> <!ELEMENT DAUGHTER (#PCDATA)>
>
> I've seen OR in the context of element attributes, of course, but what about
> in element definitions?
Yes, it is legal.
-- Ron Bourret
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