XSchema: Notation attributes

Toby Speight tms at ansa.co.uk
Thu Jun 4 20:03:28 BST 1998

Ron> Ron Bourret <URL:mailto:rbourret at dvs1.informatik.tu-darmstadt.de>

=> In article <199806041616.SAA11609 at berlin.dvs1.tu-darmstadt.de>, Ron
=> wrote:

Ron> John Cowan wrote:

>> I have more problems with notations, because it doesn't make sense
>> to me to have to redeclare every notation name with every notation
>> attribute, since any notation attribute can refer to any notation
>> name.  Thus I treat notation attributes like other attributes with
>> predefined types.

Ron> I'm not sure what you mean by redeclaring every notation name
Ron> with every attribute.  In the above structure, the notation value
Ron> is simply a NMTOKEN.  Why would I need to redeclare notation
Ron> names?  Are you thinking that the NotationValue attribute is an
Ron> enumerated (not NMTOKEN) attribute?

I think the confusion is caused by my misunderstanding.  From your DTD:

Ron> <!ELEMENT NotationType (NotationValue+)>
Ron> <!ELEMENT NotationValue (#PCDATA)>
Ron> <!ATTLIST NotationValue
Ron>           Notation IDREF #REQUIRED>

In particular, NotationType contains a list of Notation values.  Why?
What's wrong with the following?

<!ELEMENT NotationType EMPTY>


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