12637 search results - page 2142 / 2528 » Security for Extensible Systems |
282
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SIGMOD
2006
ACM
16 years 7 months ago
2006
ACM
Rapid advancements in positioning systems and wireless communications enable accurate tracking of continuously moving objects. This development poses new challenges to database te...
283
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SIGMOD
2005
ACM
16 years 7 months ago
2005
ACM
In recent years there has been considerable research on automated selection of physical design in database systems. In current solutions, candidate access paths are heuristically ...
251
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SIGMOD
2005
ACM
16 years 7 months ago
2005
ACM
Many scenarios involve merging of two B-tree indexes, both covering the same key range. Increasing demand for continuous availability and high performance requires that such mergi...
158
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SIGMOD
2003
ACM
16 years 7 months ago
2003
ACM
We discuss the design of an acquisitional query processor for data collection in sensor networks. Acquisitional issues are those that pertain to where, when, and how often data is...
195
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SIGMOD
2001
ACM
16 years 7 months ago
2001
ACM
Time-referenced data are pervasive in most real-world databases. Recent advances in temporal query languages show that such database applications may benefit substantially from bu...