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» Conditional XPath, the First Order Complete XPath Dialect
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PODS
2004
ACM
117views Database» more  PODS 2004»
14 years 5 months ago
Conditional XPath, the First Order Complete XPath Dialect
XPath is the W3C?standard node addressing language for XML documents. XPath is still under development and its technical aspects are intensively studied. What is missing at presen...
Maarten Marx
ICDT
2005
ACM
139views Database» more  ICDT 2005»
13 years 10 months ago
First Order Paths in Ordered Trees
We give two sufficient conditions on XPath like languages for having first order expressivity, meaning that every first order definable set of paths in an ordered node-labeled t...
Maarten Marx
ICDT
2009
ACM
125views Database» more  ICDT 2009»
14 years 5 months ago
How big must complete XML query languages be?
Marx and de Rijke have shown that the navigational core of the w3c XML query language XPath is not first-order complete ? that is it cannot express every query definable in firsto...
Clemens Ley, Michael Benedikt
PODS
2008
ACM
143views Database» more  PODS 2008»
14 years 5 months ago
XPath, transitive closure logic, and nested tree walking automata
We consider the navigational core of XPath, extended with two operators: the Kleene star for taking the transitive closure of path expressions, and a subtree relativisation operat...
Balder ten Cate, Luc Segoufin
WISE
2007
Springer
13 years 11 months ago
On Tree Pattern Query Rewriting Using Views
We study and present our findings on two closely related problems on xpath rewriting using views when both the view and the query are tree patterns involving /,// and []. First, g...
Junhu Wang, Jeffrey Xu Yu, Chengfei Liu