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   Re: [xml-dev] What niche is XQuery targeting?

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Michael Kay wrote:

> You can argue that the equivalent syntax in XSLT is very cumbersome, but
> that only becomes a problem if you're doing heavy joins, and I very rarely
> see applications that need that: in XML 90% of the relationships tend to be
> within the hierarchy, so you use the XPath axes rather than value-based
> joins. 

Some common reasons I have seen for doing lots of joins: references 
among web pages (especially in mailing list archives!), ATOM or RSS 
feeds, joins among XML views of relational tables, correlation data from 
several hierarchies to create a different representation...

If every set of data had only one sensible hierarchical relationship, we 
wouldn't wind up doing so much joins and restructuring.



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