| W3C http://www.w3.org/TR./xquery/: XQuery: A Query Language for XML. (2001) |
....A graph specific extension could be to check referential consistency, maybe by removing all relevant references when an element is deleted. 5 Concluding Remarks The articles [8,9,10] have already pointed out the drawbacks of relying on a navigational node selection a la XPath [11] and XQuery [12] for query and transformation languages for XML and semistructured data. 12 [9] describes a language called fxt that has variables for terms, corresponding to trees, and forests. In fxt, node selection is done with regular expressions. In contrast to Xcerpt and the basic language described above ....
W3C http://www.w3.org/TR./xquery/: XQuery: A Query Language for XML. (2001)
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