• To: "'Michele Vivoda'" <idmichele@y...>,<xml-dev@l...>
• Subject: RE: Occurrence Question
• From: "Michael Kay" <mike@s...>
• Date: Mon, 27 Mar 2006 10:08:57 +0100
• In-reply-to: <20060326183655.8726.qmail@w...>
• Thread-index: AcZRBFvjSqUlzGYJTcuGN4HPGd2RdAAeZhdg

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@y...] 
> Sent: 26 March 2006 19:37
> To: xml-dev@l...
> Subject:  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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• References:
  • Occurrence Question
    • From: Michele Vivoda <idmichele@y...>

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