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- From: Pavel Velikhov <pvelikho@cs.ucsd.edu>
- To: Rick Jelliffe <ricko@allette.com.au>
- Date: Sat, 27 Nov 1999 00:26:01 -0800
Rick Jelliffe wrote:
>
>
> From: Pavel Velikhov <pvelikho@cs.ucsd.edu>
>
> >If you don't know whether the object you are picking is an
> >attribute or an element, you will have to write a disjunction.
>
> When don't you know whether an object you are picking is an
> attribute or an element?
>
> Rick Jelliffe
When you are querying a collection that does not have a DTD for
example. You may know that homes have an id, but you don't know
whether the id is an attribute or a element. Another case is a
relational->XML wrapper, it export relational attributes as
XML attributes, but might as well export them as elements.
Pavel Velikhov
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