240 search results - page 25 / 48 » Low Cost Databases for NOW |
PVLDB
2010
14 years 10 months ago
2010
The goal of a threshold query is to detect all objects whose score exceeds a given threshold. This type of query is used in many settings, such as data mining, event triggering, a...
SSDBM
2006
IEEE
15 years 5 months ago
2006
IEEE
Many applicationsstore data items for a pre-determined, finite length of time. Examples include slidingwindows over on-line data streams, where old data are dropped as the window...
SIGMOD
1999
ACM
15 years 4 months ago
1999
ACM
In this paper, we introduce self-tuning histograms. Although similar in structure to traditional histograms, these histograms infer data distributions not by examining the data or...
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DEXA
2007
Springer
15 years 3 months ago
2007
Springer
The two dominant costs in continuous spatial query systems are the wireless communication cost for location update, and the evaluation cost for query processing. Existing works add...
DASFAA
2007
IEEE
15 years 6 months ago
2007
IEEE
XML is by now the de facto standard for exporting and exchanging data on the web. The need for querying XML data sources whose structure is not fully known to the user and the need...