619 search results - page 5 / 124 » Query Planning in Infomaster |
CIKM
2001
Springer
15 years 4 months ago
2001
Springer
Existing approaches for optimizing queries in data integration use decoupled strategies–attempting to optimize coverage and cost in two separate phases. Since sources tend to ha...
112
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PVLDB
2010
14 years 6 months ago
2010
Experience with relational systems has shown that distribution is an effective way of improving the scalability of query evaluation. In this paper, we show how distributed query e...
133
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PVLDB
2008
14 years 11 months ago
2008
The diversity and large volumes of data processed in the Natural Sciences today has led to a proliferation of highlyspecialized and autonomous scientific databases with inherent a...
136
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IDEAS
2010
IEEE
14 years 10 months ago
2010
IEEE
Even though an effective cost-based query optimizer is of utmost importance for the efficient evaluation of XQuery expressions in native XML database systems, such a component is...