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Conditionals in schemas?  RSS feed

John Wetherbie
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I was wondering if it is possible to specify the following in a schema:
If I have one or more element A I must have at least one B. It would be even better if I can say that the number of B's can't exceed the number of A's. A and B are peer elements in an XML doc.
I haven't seen anything like this yet in the stuff I have read about schemas. Maybe I haven't read far enough yet.
Hmm, just thought of a way that I can avoid this for the specific application I am thinking of but am still very interested in find out if this is possible for more general casses.
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