2546 search results - page 51 / 510 » Managing long-running queries |
179
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EURONGI
2008
Springer
15 years 8 months ago
2008
Springer
Current mobility management systems are operator centralized, and focused on single link technologies. In heterogeneous wireless mesh networks, vertical handovers could be a length...
269
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PODS
2009
ACM
16 years 6 months ago
2009
ACM
We consider the problem of deciding query equivalence for a conjunctive language in which queries output complex objects composed from a mixture of nested, unordered collection ty...
177
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DOLAP
2003
ACM
15 years 11 months ago
2003
ACM
Multidimensional aggregation queries constitute the single most important class of queries for data warehousing applications and decision support systems. The bottleneck in the ev...
177
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CIKM
2009
Springer
15 years 10 months ago
2009
Springer
We study query processing in large graphs that are fundamental data model underpinning various social networks and Web structures. Given a set of query nodes, we aim to find the g...
194
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CIDR
2007
15 years 7 months ago
2007
We present a “black-box” approach to estimating query cardinality that has no knowledge of query execution plans and data distribution, yet provides accurate estimates. It doe...