IDREF in XML-QL or XQuery query

Hi,

	I'm trying to find if it's possible to combine in a query
	written in XML-QL\XQuery IDREF while expressing the query DAG or
	general graph. If it's possible, how exactly each language
	evaluate these IDREF's while computing the query answer?

	Thank you in advance.



  x~~~x
 &&- -&&
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   \v/
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  \\ //  Goodbye , Frieda Shachar
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  Email:fridas@cs.huji.ac.il