282 search results - page 20 / 57 » Merging Databases Under Constraints |
102
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VLDB
1997
ACM
15 years 7 months ago
1997
ACM
The enhanced pay-per-view (EPPV) model for providing continuous-media-on-demand(CMOD) services associates with each continuous media clip a display frequency that dependson the cl...
167
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DEXAW
2006
IEEE
15 years 4 months ago
2006
IEEE
A database D may be inconsistent wrt a given set IC of integrity constraints. Consistent Query Answering is the problem of computing from D the answers to a query that are consist...
111
Voted
CORR
2010
Springer
15 years 1 months ago
2010
Springer
We study active integrity constraints and revision programming, two formalisms designed to describe integrity constraints on databases and to specify policies on preferred ways to...
134
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PODS
1999
ACM
15 years 7 months ago
1999
ACM
We investigate the problem of how to extend constraint query languages with aggregate operators. We deal with standard relational aggregation, and also with aggregates speci c to ...
116
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RTSS
1996
IEEE
15 years 7 months ago
1996
IEEE
In this paper, issues involved in the design of a real-time database which maintains data temporal consistency are discussed. The concept of data-deadline is introduced and time co...