6650 search results - page 444 / 1330 » Mutating database queries |
250
Voted
VLDB
2002
ACM
16 years 7 months ago
2002
ACM
We are interested in de ning and querying views in a huge and highly heterogeneous XML repository Web scale. In this context, view de nitions are very large and there is no appare...
195
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SIGMOD
2004
ACM
16 years 7 months ago
2004
ACM
Existing SQL aggregate functions present important limitations to compute percentages. This article proposes two SQL aggregate functions to compute percentages addressing such lim...
177
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PODS
2005
ACM
16 years 6 months ago
2005
ACM
Owners of sources registered in an information integration system, which provides answers to a (potentially evolving) set of client queries, need to know their contribution to the...
179
Voted
EDBT
2008
ACM
16 years 6 months ago
2008
ACM
In this paper, we propose a bitmap approach for efficient subspace skyline computation in a distributed setting. Our approach computes extended skylines which have been shown to i...
170
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CIKM
2009
Springer
16 years 1 months ago
2009
Springer
Bitmap indexes are widely used in Decision Support Systems (DSSs) to improve query performance. In this paper, we evaluate the use of compressed inverted indexes with adapted quer...