Sampling statistics in a database system

A database system has the ability to perform sampled statistics collection, in which collection of statistics of a table is based on a sample (less than all rows of the table). The sample size is adjusted as the table is scanned in response to detecting a predetermined characteristic of the table (e...

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Bibliographic Details
Main Author BURGER LOUIS M
Format Patent
LanguageEnglish
Published 25.03.2004
Edition7
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:A database system has the ability to perform sampled statistics collection, in which collection of statistics of a table is based on a sample (less than all rows of the table). The sample size is adjusted as the table is scanned in response to detecting a predetermined characteristic of the table (e.g., skewed data values are detected).
Bibliography:Application Number: US20020255734