151 search results - page 18 / 31 » Materializing views with minimal size to answer queries |
143
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SIGMOD
2008
ACM
15 years 12 months ago
2008
ACM
We present Stretch `n' Shrink, a query design framework that explicitly takes into account user preferences about the desired answer size, and subsequently modifies the query...
AAAI
2006
15 years 1 months ago
2006
We consider the problem of rewriting a query efficiently using materialized views. In the context of information integration, this problem has received significant attention in th...
PVLDB
2010
14 years 10 months ago
2010
We propose the k-representative regret minimization query (k-regret) as an operation to support multi-criteria decision making. Like top-k, the k-regret query assumes that users h...
110
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DAWAK
2000
Springer
15 years 4 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...
108
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ISI
2008
Springer
14 years 11 months ago
2008
Springer
In this paper, we propose managing data summaries in unstructured P2P systems. Our summaries are intelligible views with two main virtues. First, they can be directly queried and u...