2987 search results - page 110 / 598 » Multiobjective Query Optimization |
100
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ADBIS
2005
Springer
15 years 7 months ago
2005
Springer
XQuery is widely used for querying XML documents. Within this paper, we examine optimization rules for XQuery queries that exploit type information of the input XML document given ...
135
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WWW
2007
ACM
16 years 2 months ago
2007
ACM
Continuous queries are used to monitor changes to time varying data and to provide results useful for online decision making. Typically a user desires to obtain the value of some ...
288
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Tutorial
The wide spread use of cellular phones, handheld devices, and GPS-like technology enables location-aware environments where virtually all objects are aware of their locations. Loca...
121
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PODS
2004
ACM
16 years 1 months ago
2004
ACM
The problem of deciding query containment has important applications in classical query optimization and heterogeneous database systems. Query containment is undecidable for unres...
DLOG
2010
14 years 11 months ago
2010
We develop a query algebra that supports efficient assertion retrieval--a natural extension of instance retrieval. The algebra is based on previously developed techniques for index...