mrc at allette.com.au
Wed Dec 22 23:13:22 GMT 1999
heiko.grussbach at crpht.lu wrote:
> I have the following problem, I want to define an element E that may
> contain elements A,B,C. Order should be insignificant and A,B and C are all
> optional. Furthermore, A,B and C may each be replaced by X.
If more elements were to be added as children of E, the exponential combinations would make maintenance of content models untenable - it's
reasonable then to conclude that this is not an appropriate approach from the outset. I would use something like:
<!ELEMENT E (A | B | C | X)*>
and use a schema or XSL to advise when elements are found to behave in a way contrary to your intentions but not expressed by the content model.
BTW, this question is probably more suited to 'General discussion of Extensible Markup Language <XML-L at listserv.heanet.ie>'.
Marcus Carr email: mrc at allette.com.au
Allette Systems (Australia) www: http://www.allette.com.au
"Everything should be made as simple as possible, but not simpler."
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