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Yes. Is this a homework problem?
Bob Foster
mhleung@netspace.net.au wrote:
> Hi,
>
> I would like to know whether it's possible to define an XML Schema for the
> following XML document instance:
>
> <root>
> <a/><b/><c/>
> <k/><k/><k/>
> </root>
>
> with the following constraints:
> 1) <a/>, <b/>, <c/> and <k/> can appear in any order
> 2) <a/>, <b/> and <c/> can appear at most once under <root>
> 3) <k/> must appear at least once.
>
> So the following, as well as the example above is also valid:
>
> <root>
> <a/><k/><b/><k/><k/><c/>
> </root>
>
> Many thanks for your help in advance
> Michael.
>
>
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