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Hi,

> for step 3. i don't know what is the best solution? again java?
> XQuery? XSLT?

It depends on your application, but XQuery was designed to handle
combining information from different documents ("joins").
I.e. the typic query would be:
> for $a in doc('a.xml')/foo/bar,
>     $b in doc('b.xml')//baz
> where $a/@id = $b/ref/@id
> return $b
etc. pp.

> are there any learn-samples to do this?

There are quite a lot of tutorials on XQuery. For the impatient reader
the two from Michael Kay are very good:
http://www.stylusstudio.com/xquery_primer.html
http://www.stylusstudio.com/xquery_flwor.html

A bit longer:
http://www.datadirect.com/developer/xquery/xquerybook/index.ssp

Just Google for "xquery tutorial".

Regards,

Martin Probst
X-Hive Corporation


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