2228 search results - page 225 / 446 » A System for Semantic Query Optimization |
116
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WMCSA
2002
IEEE
15 years 8 months ago
2002
IEEE
We show how the database community’s notion of a generic query interface for data aggregation can be applied to ad-hoc networks of sensor devices. As has been noted in the senso...
140
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BIRTE
2006
15 years 7 months ago
2006
Real-time enterprises rely on user queries being answered in a timely fashion and using fresh data. This is relatively easy when systems are lightly loaded and both queries and upd...
148
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PVLDB
2010
14 years 10 months ago
2010
Experience with relational systems has shown that distribution is an effective way of improving the scalability of query evaluation. In this paper, we show how distributed query e...
129
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MOBIHOC
2003
ACM
16 years 3 months ago
2003
ACM
Spatial query execution is an essential functionality of a sensor network, where a query gathers sensor data within a specific geographic region. Redundancy within a sensor networ...
149
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DEXA
2009
Springer
15 years 10 months ago
2009
Springer
Dimension hierarchies represent a substantial part of the data warehouse model. Indeed they allow decision makers to examine data at different levels of detail with On-Line Analyt...