2635 search results - page 406 / 527 » Algorithms for the Database Layout Problem |
230
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SIGMOD
2007
ACM
16 years 4 months ago
2007
ACM
Complex queries often contain common or similar subexpressions, either within a single query or among multiple queries submitted as a batch. If so, query execution time can be imp...
149
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WEBDB
2009
Springer
15 years 11 months ago
2009
Springer
Recently, the opportunity of extracting structured data from the Web has been identified by a number of research projects. One such example is that millions of relational-style H...
131
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VLDB
2007
ACM
15 years 10 months ago
2007
ACM
A top-k query retrieves the k highest scoring tuples from a data set with respect to a scoring function defined on the attributes of a tuple. The efficient evaluation of top-k q...
140
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VLDB
2004
ACM
15 years 9 months ago
2004
ACM
Declarative queries are proving to be an attractive paradigm for interacting with networks of wireless sensors. The metaphor that “the sensornet is a database” is problematic,...
150
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BTW
2007
Springer
15 years 8 months ago
2007
Springer
: Schema mapping techniques for data exchange have become popular and useful tools both in research and industry. A schema mapping relates a source schema with a target schema via ...