2063 search results - page 102 / 413 » Containment of Aggregate Queries |
148
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DCOSS
2005
Springer
15 years 9 months ago
2005
Springer
The widespread dissemination of small-scale sensor nodes has sparked interest in a powerful new database abstraction for sensor networks: Clients “program” the sensors through ...
135
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VLDB
1994
ACM
15 years 8 months ago
1994
ACM
A new type of optimization, called predicate move-around, ia introduced. It is shown how this optimization `considerably improvea the efficiency of evaluating SQL queries that hav...
146
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DLOG
2008
15 years 6 months ago
2008
We have shown recently that, in extensions of ALC that involve inverse roles, conjunctive query answering is harder than satisfiability: it is 2-ExpTime-complete in general and NEx...
137
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WSDM
2009
ACM
15 years 11 months ago
2009
ACM
Aggregated search refers to the integration of content from specialized corpora or verticals into web search results. Aggregation improves search when the user has vertical intent...
238
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ICDE
2008
IEEE
16 years 5 months ago
2008
IEEE
Aggregation is among the core functionalities of OLAP systems. Frequently, such queries are issued in decision support systems to identify interesting groups of data. When more tha...