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SIGMOD
1997
ACM
159views Database» more  SIGMOD 1997»
14 years 26 days ago
On-Line Warehouse View Maintenance
Data warehouses store materialized views over base data from external sources. Clients typically perform complex read-only queries on the views. The views are refreshed periodical...
Dallan Quass, Jennifer Widom
BTW
2007
Springer
154views Database» more  BTW 2007»
14 years 2 months ago
Integrating Query-Feedback Based Statistics into Informix Dynamic Server
: Statistics that accurately describe the distribution of data values in the columns of relational tables are essential for effective query optimization in a database management sy...
Alexander Behm, Volker Markl, Peter J. Haas, Kesha...
SIGMOD
1999
ACM
110views Database» more  SIGMOD 1999»
14 years 1 months ago
Multi-dimensional Selectivity Estimation Using Compressed Histogram Information
The database query optimizer requires the estimation of the query selectivity to find the most efficient access plan. For queries referencing multiple attributes from the same rel...
Ju-Hong Lee, Deok-Hwan Kim, Chin-Wan Chung
FQAS
2006
Springer
186views Database» more  FQAS 2006»
14 years 10 days ago
Project-Join-Repair: An Approach to Consistent Query Answering Under Functional Dependencies
Consistent query answering is the term commonly used for the problem of answering queries on databases that violate certain integrity constraints. We address this problem for univ...
Jef Wijsen
EDBT
2010
ACM
145views Database» more  EDBT 2010»
13 years 12 months ago
Splash: ad-hoc querying of data and statistical models
Data mining is increasingly performed by people who are not computer scientists or professional programmers. It is often done as an iterative process involving multiple ad-hoc tas...
Lujun Fang, Kristen LeFevre