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   Re: [xml-dev] XML Schema Question: specifying restrictions for alist of

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On Wed, 2004-04-07 at 16:49, Thomas B. Passin wrote:

> Seems to me that you can just declare the attribute "default" to be of 
> type ID.  That requires its value to be unique.  Then create a 
> restriction so that it can only accept the value "true".  Finally, make 
> the attribute's presence optional.  Now you are allowed to use it, but 
> it must have the value "true" and that value may only appear once.
> This method ought to be easier and more interoperable than using "key".

Yes, that sounds easier.

> Of course, this won't work if you want to also include many attributes 
> default='false'.

Or if you have other IDs that could have the value "true", or if you can
have several "computer_list" elements in a document, ...

The fact that IDs are global to a document has a lot of side effects.

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