964 search results - page 58 / 193 » Efficiently Ordering Query Plans for Data Integration |
150
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DASFAA
2008
IEEE
15 years 11 months ago
2008
IEEE
Twig pattern matching (TPM) is the core operation of XML query processing. Existing approaches rely on either efficient data structures or novel labeling/indexing schemes to reduce...
179
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WISE
2000
Springer
15 years 9 months ago
2000
Springer
The mediator/wrapper approach is used to integrate data from different databases and other data sources by introducing a middleware virtual database that provides high level abstr...
253
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SIGMOD
2008
ACM
16 years 4 months ago
2008
ACM
Approximate queries on a collection of strings are important in many applications such as record linkage, spell checking, and Web search, where inconsistencies and errors exist in...
153
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AMW
2010
15 years 6 months ago
2010
In this work we present in-network techniques to improve the efficiency of spatial aggregate queries. Such queries are very common in a sensornet setting, demanding more targeted t...
159
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ICDCS
2008
IEEE
15 years 11 months ago
2008
IEEE
This paper considers a multi-query optimization issue for distributed similarity query processing, which attempts to exploit the dependencies in the derivation of a query evaluati...