2546 search results - page 221 / 510 » Managing long-running queries |
250
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SIGMOD
2008
ACM
16 years 6 months ago
2008
ACM
Today's query processing engines do not take advantage of the multiple occurrences of a relation in a query to improve performance. Instead, each instance is treated as a dis...
263
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SIGMOD
2007
ACM
16 years 6 months ago
2007
ACM
With the increasing amount of text data stored in relational databases, there is a demand for RDBMS to support keyword queries over text data. As a search result is often assemble...
170
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SIGMOD
2001
ACM
16 years 6 months ago
2001
ACM
Users often need to optimize the selection of objects by appropriately weighting the importance of multiple object attributes. Such optimization problems appear often in operation...
194
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PODS
2007
ACM
16 years 6 months ago
2007
ACM
We consider the problem of optimizing and executing multiple continuous queries, where each query is a conjunction of filters and each filter may occur in multiple queries. When f...
237
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SAC
2010
ACM
16 years 1 months ago
2010
ACM
In this paper, we explore the problem of processing a novel type of location based queries, named the location based top-k query, which involves both of spatial and non-spatial sp...