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Yes, I think they have the same meaning: they validate the same instances,
and they generate the same PSVI.
Michael Kay
http://www.saxonica.com/
> -----Original Message-----
> From: Michele Vivoda [mailto:idmichele@yahoo.it]
> Sent: 26 March 2006 19:37
> To: xml-dev@lists.xml.org
> Subject: [xml-dev] Occurrence Question
>
> Hi All,
>
> I would like to know if these two snippets
> have the same 'meaning' (for xml schema):
>
> <xs:choice>
> <xs:element minOccurs="0" maxOccurs="unbounded"
> ref="col"/>
> <xs:element minOccurs="0" maxOccurs="unbounded"
> ref="colgroup"/>
> </xs:choice>
>
> AND
>
> <xs:choice minOccurs='0'>
> <xs:element maxOccurs="unbounded" ref="col"/>
> <xs:element maxOccurs="unbounded" ref="colgroup"/>
> </xs:choice>
>
> Options I thought:
>
> 1) they express the same schema components
> (don't think so, since min and max are attributes of
> particle component)
> 2) they express different components but these
> components validate the same instances.
> 3) they are different and validate different instances
> (presumably
> because the first one wants at least one selected
> particle for the choice).
> 4) In some contexts they have surely the same meaning,
> in others they might not (?).
> 5) None of the above
>
> Thanks
> Michele Vivoda
>
>
>
>
>
>
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