390 search results - page 22 / 78 » Approximate Query Answering in Locally Closed Databases |
VLDB
2004
ACM
15 years 3 months ago
2004
ACM
We consider the problem of data sharing between autonomous data sources in an environment where constraints cannot be placed on the shared contents of sources. Our solutions rely ...
VLDB
2001
ACM
15 years 2 months ago
2001
ACM
Estimating the number of distinct values is a wellstudied problem, due to its frequent occurrence in queries and its importance in selecting good query plans. Previous work has sh...
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EDBT
2012
ACM
13 years 5 days ago
2012
ACM
Record linkage analysis, which matches records referring to the same real world entities from different data sets, is an important task in data integration. Uncertainty often exi...
BDA
2007
14 years 11 months ago
2007
Sharing huge, massively distributed databases in P2P systems is inherently difficult. As the amount of stored data increases, data localization techniques become no longer suffi...
GIS
2010
ACM
14 years 8 months ago
2010
ACM
Many Web sites support keyword search on their spatial data, such as business listings and photos. In these systems, inconsistencies and errors can exist in both queries and the d...