549 search results - page 36 / 110 » Data Expiration and Aggregate Queries |
VLDB
2004
ACM
15 years 5 months ago
2004
ACM
We consider the problem of resource sharing when processing large numbers of continuous queries. We specifically address sliding-window aggregates over data streams, an important...
ADC
2004
Springer
15 years 5 months ago
2004
Springer
Aggregating spatial objects is a necessary step in generating spatial data cubes to support roll-up/drill-down operations. Current approaches face performance bottleneck issues wh...
104
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TKDE
1998
14 years 11 months ago
1998
—This paper describes a unified data model that represents multimedia, timeline, and simulation data utilizing a single set of related data modeling constructs. A uniform model f...
103
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ICDE
2010
IEEE
15 years 6 months ago
2010
IEEE
— Previous studies on supporting keyword queries in RDBMSs provide users with a ranked list of relevant linked structures (e.g. joined tuples) or individual tuples. In this paper...
DMDW
2000
15 years 1 months ago
2000
View materialization is a central issue in logical design of data warehouses since it is one of the most powerful techniques to improve the response to the workload. Most approach...