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Re: [xml-dev] Query regarding attribute grouping in XML Schema

> Consider the following XML tag with the attributes
> -doorno and streetname.
> <ADDRESS doorno="" streetname=""/>
> I have this requirement. I need to specify in the
> schema that doorno and street name must occur together
> or both should not occur at all. I can't have doorno
> without streetname and streetname without doorno. I'm
> unable to do this in the XML schema. I tried doing
> this using XML Spy v3.5. Could someone please help
> out?

You would have to use an annotation with W3C XML Schemas.  It's trivially
easy in RELAX NG:

<element name="ADDRESS">
    <attribute name="doorno"/>
    <attribute name="streetname"/>