1160 search results - page 45 / 232 » Query Processing and Optimization for Pictorial Query Trees |
180
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VLDB
2003
ACM
15 years 10 months ago
2003
ACM
In data applications such as information integration, there can be limited access patterns to relations, i.e., binding patterns require values to be specified for certain attribut...
MOBIDE
2010
ACM
14 years 10 months ago
2010
ACM
We propose a distributed algorithm to construct a balanced communication tree that serves in gathering data from the network nodes to a sink. Our algorithm constructs a near-optim...
SIGMOD
1995
ACM
15 years 1 months ago
1995
ACM
Text is a pervasive information type, and many applications require querying over text sources in addition to structured data. This paper studies the problem of query processing i...
121
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ICDE
2006
IEEE
15 years 4 months ago
2006
IEEE
We consider the problem of query optimization in distributed stream based systems where multiple continuous queries may be executing simultaneously. In such systems, distribution ...
DAWAK
2003
Springer
15 years 3 months ago
2003
Springer
We introduce a new method for optimization of SQL queries with nested subqueries. The method is based on the idea of Boolean aggregates, aggregates that compute the conjunction or ...