RE: Choice: attribute or child element

> -----Original Message-----
> From:	Alessandro Vernet [SMTP:avernet@scdi.org]
> Sent:	Monday, December 09, 2002 11:29 AM
> To:	xmlschema-dev@w3.org
> Subject:	Re: Choice: attribute or child element
> 
> Thank you all for your answers regarding the validation of documents 
> of the form <a><b/></a> or <a c="..."/> (element "a" having a child 
> element "b" or an attribute "c", but not both). It seems that this 
> kind of document cannot be completely validated with a W3C Schema.
> 
> Does anyone know if this feature is considered for future versions of 
> the specification?
> 
Yes, handling co-occurance constraints of this kind is on our list of candidate requirements for version 1.1.

pvb