549 search results - page 56 / 110 » Data Expiration and Aggregate Queries |
IPSN
2003
Springer
15 years 5 months ago
2003
Springer
High-level query languages are an attractive interface for sensor networks, potentially relieving application programmers from the burdens of distributed, embedded programming. In ...
DEXAW
1998
IEEE
15 years 4 months ago
1998
IEEE
Materialized views offer opportunities for significant performance gain in query evaluation by providing fast access to pre-computed data. The question of when and how to use a ma...
106
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VLDB
1995
ACM
15 years 3 months ago
1995
ACM
We address the problem of finding parallel plans for SQL queries using the two-phase approach of join ordering and query rewrite (JOQR) followed by parallelization. We focus on t...
121
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DMSN
2006
ACM
15 years 5 months ago
2006
ACM
In this paper, we study the problem of processing multiple queries in a wireless sensor network. We focus on multiquery optimization at the base station level to minimize the numb...
VLDB
2007
ACM
15 years 6 months ago
2007
ACM
For a large number of data management problems, it would be very useful to be able to obtain a few samples from a data set, and to use the samples to guess the largest (or smalles...