995 search results - page 135 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
159
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EDBT
1994
ACM
15 years 6 months ago
1994
ACM
Abstract. Good estimates of join result sizes are critical for query optimization in relational database management systems. We address the problem of incrementally obtaining accur...
101
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SAC
2009
ACM
15 years 8 months ago
2009
ACM
XML data warehouses form an interesting basis for decisionsupport applications that exploit heterogeneous data from multiple sources. However, XML-native database systems currentl...
128
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SIGMOD
2000
ACM
15 years 6 months ago
2000
ACM
We consider spatio-temporal databases supporting spatial objects with continuously changing position and extent, termed moving objects databases. We formally define a data model f...
123
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WWW
2008
ACM
16 years 2 months ago
2008
ACM
This paper presents PrivacyGrid - a framework for supporting anonymous location-based queries in mobile information delivery systems. The PrivacyGrid framework offers three unique...
135
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IPSN
2007
Springer
15 years 8 months ago
2007
Springer
FlashDB is a self-tuning database optimized for sensor networks using NAND flash storage. In practical systems flash is used in different packages such as on-board flash chips,...