710 search results - page 54 / 142 » Querying continuous functions in a database system |
163
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DKE
1998
15 years 5 months ago
1998
The issues of schema evolution and temporal object models are generally considered to be orthogonal and are handled independently. However, to properly model applications that nee...
260
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Publication
Spatio-temporal data streams that are generated from mobile stream sources (e.g., mobile sensors) experience similar environmental conditions that result in distinct phenomena. Sev...
258
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ICDE
2007
IEEE
16 years 7 months ago
2007
IEEE
Position updates and query re-evaluations are two predominant, costly components of processing location-based, continual queries (CQs) in mobile systems. To obtain high-quality qu...
160
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SSDBM
2005
IEEE
15 years 11 months ago
2005
IEEE
This paper introduces a framework for Phenomena Detection and Tracking (PDT, for short) in sensor network databases. Examples of detectable phenomena include the propagation over ...
274
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SIGMOD
2005
ACM
16 years 6 months ago
2005
ACM
While traditional database systems optimize for performance on one-shot queries, emerging large-scale monitoring applications require continuous tracking of complex aggregates and...