620 search results - page 4 / 124 » Algorithms for Rewriting Aggregate Queries Using Views |
SIGMOD
2001
ACM
15 years 11 months ago
2001
ACM
We study the problem of generating e cient, equivalent rewritings using views to compute the answer to a query. We take the closed-world assumption, in which views are materialize...
108
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DBSEC
2006
15 years 1 months ago
2006
Most state-of-the-art approaches of securing XML documents are based on a partial annotation of an XML tree with security labels which are later propagated to unlabeled nodes of th...
183
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SIGMOD
2006
ACM
15 years 11 months ago
2006
ACM
We present and analyze an algorithm for equivalent rewriting of XQuery queries using XQuery views, which is complete for a large class of XQueries featuring nested FLWR blocks, XM...
121
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WISE
2007
Springer
15 years 5 months ago
2007
Springer
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...
121
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ICDE
2009
IEEE
14 years 9 months ago
2009
IEEE
There is much effort to develop comprehensive support for the storage and querying of XML data in database management systems. The major developers have extended their systems to h...