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MAXENT

Proceedings of the 2006 ACM SIGMOD international conference on Management of data, 2006
When comparing alternative query execution plans (QEPs), a cost-based query optimizer in a relational database management system needs to estimate the selectivity of conjunctive predicates. To avoid inaccurate independence assumptions, modern optimizers try to exploit multivariate statistics (MVS) that provide knowledge about joint frequencies in a ...
Volker Markl   +4 more
openaire   +1 more source

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