2 search results - page 1 / 1 » CORDS: Automatic Discovery of Correlations and Soft Function... |
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
The rich dependency structure found in the columns of real-world relational databases can be exploited to great advantage, but can also cause query optimizers--which usually assum...
VLDB
2004
ACM
13 years 10 months ago
2004
ACM
When query optimizers erroneously assume that database columns are statistically independent, they can underestimate the selectivities of conjunctive predicates by orders of magni...