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PODS
2006
ACM
137views Database» more  PODS 2006»
14 years 7 months ago
Data exchange: computing cores in polynomial time
Data exchange deals with inserting data from one database into another database having a different schema. We study and solve a central computational problem of data exchange, nam...
Georg Gottlob, Alan Nash
SIGMOD
2000
ACM
129views Database» more  SIGMOD 2000»
14 years 2 days ago
Mining Frequent Patterns without Candidate Generation
Mining frequent patterns in transaction databases, time-series databases, and many other kinds of databases has been studied popularly in data mining research. Most of the previous...
Jiawei Han, Jian Pei, Yiwen Yin
PODS
2010
ACM
207views Database» more  PODS 2010»
14 years 24 days ago
Understanding cardinality estimation using entropy maximization
Cardinality estimation is the problem of estimating the number of tuples returned by a query; it is a fundamentally important task in data management, used in query optimization, ...
Christopher Ré, Dan Suciu
VLDB
1992
ACM
140views Database» more  VLDB 1992»
13 years 11 months ago
Practical Skew Handling in Parallel Joins
We present an approach to dealing with skew in parallel joins in database systems. Our approach is easily implementable within current parallel DBMS, and performs well on skewed d...
David J. DeWitt, Jeffrey F. Naughton, Donovan A. S...
ICDE
2006
IEEE
275views Database» more  ICDE 2006»
14 years 9 months ago
Privacy Preserving Query Processing Using Third Parties
Data integration from multiple autonomous data sources has emerged as an important practical problem. The key requirement for such data integration is that owners of such data nee...
Amr El Abbadi, Aziz Gulbeden, Divyakant Agrawal, F...