186 search results - page 30 / 38 » Queries and materialized views on probabilistic databases |
158
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ICDE
2005
IEEE
15 years 11 months ago
2005
IEEE
In mobile and ambient environments, devices need to become autonomous, managing and resolving problems without interference from a user. The database of a (mobile) device can be s...
PODS
2008
ACM
15 years 9 months ago
2008
ACM
We present a formal framework for capturing the provenance of data appearing in XQuery views of XML. Building on previous work on relations and their (positive) query languages, w...
DASFAA
2006
IEEE
15 years 3 months ago
2006
IEEE
Abstract. To process aggregation queries issued through different sensors as access points in sensor networks, existing algorithms handle queries independently and perform in-netw...
183
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GIS
2004
ACM
15 years 10 months ago
2004
ACM
Sensor networks are unattended deeply distributed systems whose schema can be conceptualized using the relational model. Aggregation queries on the data sampled at each ode are th...
196
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ICDT
2009
ACM
15 years 10 months ago
2009
ACM
A technique called user views has recently been proposed to focus user attention on relevant information in response to provenance queries over workflow executions [1, 2]: Given u...