373 search results - page 36 / 75 » Querying Priced Information in Databases: The Conjunctive Ca... |
IPMU
2010
Springer
14 years 8 months ago
2010
Springer
Controlled Query Evaluation (CQE) is a logical framework for the protection of secrets in databases. In this article, we extend the CQE framework to possibilistic logic: knowledge ...
75
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VLDB
1997
ACM
15 years 1 months ago
1997
ACM
Data is often stored in summarized form, as a histogram of aggregates (COUNTs, SUMs, or AVeraGes) over speci ed ranges. We study how to estimate the original detail data from the ...
DAWAK
2000
Springer
15 years 2 months ago
2000
Springer
In the context of multidimensional databases implemented on relational DBMSs through star schemes, the most effective technique to enhance performances consists of materializing re...
167
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ICDE
2006
IEEE
15 years 11 months ago
2006
IEEE
Data integration from multiple autonomous data sources has emerged as an important practical problem. The key requirement for such data integration is that owners of such data nee...
172
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GIS
2005
ACM
15 years 10 months ago
2005
ACM
Nearest neighbor (NN) searches represent an important class of queries in geographic information systems (GIS). Most nearest neighbor algorithms rely on static distance informatio...