549 search results - page 17 / 110 » Data Expiration and Aggregate Queries |
DKE
2006
14 years 11 months ago
2006
The last few years, there has been an extensive body of literature in data warehousing applications that primarily focuses on basket-type (transactional) data, common in retail in...
SSDBM
2006
IEEE
15 years 5 months ago
2006
IEEE
We consider an environment where a subscription system continuously evaluates pattern-based requests over unbounded sequential data. We propose an extension of the traditional pat...
126
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CORR
2011
Springer
14 years 6 months ago
2011
Springer
We study in this paper provenance information for queries with aggregation. Provenance information was studied in the context of various query languages that do not allow for aggr...
106
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IDEAS
2006
IEEE
15 years 5 months ago
2006
IEEE
In this paper, we present SURCH, a novel decentralized algorithm for efficient processing of queries generated in sensor networks. Unlike existing techniques, SURCH is fully dist...
125
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ADHOCNOW
2008
Springer
15 years 26 days ago
2008
Springer
This paper presents a novel method for optimizing sliding window based continuous queries. We deal with two categories of aggregation operations: stepwise aggregation (e.g. COUNT) ...