486 search results - page 55 / 98 » Evaluating Top-k Queries over Web-Accessible Databases |
108
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GIS
2010
ACM
15 years 2 days ago
2010
ACM
Recently, a wide range of applications like hurricane research, fire management, navigation systems, and transportation, to name only a few, has shown increasing interest in mana...
131
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CIKM
2005
Springer
15 years 7 months ago
2005
Springer
Modern query optimizers select an efficient join ordering for a physical execution plan based essentially on the average join selectivity factors among the referenced tables. In ...
130
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EDBT
2009
ACM
15 years 5 months ago
2009
ACM
In a database system, disclosure of confidential private data may occur if users can put together the answers of past queries. Traditional access control mechanisms cannot guard a...
128
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WIDM
2004
ACM
15 years 7 months ago
2004
ACM
We address the problem of querying XML data over a P2P network. In P2P networks, the allowed kinds of queries are usually exact-match queries over file names. We discuss the exte...
132
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EDBT
2010
ACM
15 years 4 months ago
2010
ACM
A key advantage of scientific workflow systems over traditional scripting approaches is their ability to automatically record data and process dependencies introduced during workf...