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204
Voted
SIGMOD
2008
ACM
16 years 2 months ago
2008
ACM
Schema integration is the problem of creating a unified target schema based on a set of existing source schemas that relate to each other via specified correspondences. The unifie...
184
Voted
SIGMOD
2007
ACM
16 years 2 months ago
2007
ACM
Sketching techniques can provide approximate answers to aggregate queries either for data-streaming or distributed computation. Small space summaries that have linearity propertie...
195
Voted
SIGMOD
2005
ACM
16 years 2 months ago
2005
ACM
This paper introduces RankSQL, a system that provides a systematic and principled framework to support efficient evaluations of ranking (top-k) queries in relational database syst...
127
Voted
SIGMOD
2004
ACM
16 years 2 months ago
2004
ACM
Dynamic plan migration is concerned with the on-the-fly transition from one continuous query plan to a semantically equivalent yet more efficient plan. Migration is important for ...
115
click to vote
SIGMOD
2001
ACM
16 years 2 months ago
2001
ACM
Estimating the result size of complex queries that involve selection on multiple attributes and the join of several relations is a difficult but fundamental task in database query...