2217 search results - page 177 / 444 » Rank-aware Query Optimization |
306
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VLDB
2005
ACM
16 years 6 months ago
2005
ACM
Estimating the selectivity of multidimensional range queries over real valued attributes has significant applications in data exploration and database query optimization. In this p...
195
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WISE
2007
Springer
16 years 20 days 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...
193
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HPDC
2000
IEEE
15 years 10 months ago
2000
IEEE
The dQUOB system satis es client need for speci c information from high-volume data streams. The data streams we speak of are the ow of data existing during large-scale visualizat...
266
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SIGMOD
2008
ACM
16 years 6 months ago
2008
ACM
Mobile devices equipped with positioning capabilities (e.g., GPS) can ask location-dependent queries to Location Based Services (LBS). To protect privacy, the user location must n...
224
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DOCENG
2004
ACM
15 years 12 months ago
2004
ACM
With the wide adoption of XML as a standard data representation and exchange format, querying XML documents becomes increasingly important. However, relational database systems co...