Automatic reduction of table memory footprint using column...

Details Automatic reduction of table memory footprint using column... Automatic reduction of table memory footprint using column...

2007-04-02

2010-10-05

Wong, Don (Department: 2163)

Data processing: database and file management or data structures

Database design

Database and data structure management

C707S809000

Reexamination Certificate

active

07809771

ABSTRACT:
In a business system, one or more methods can be used to reduce an amount of redundancy in the storage of data. One implementation includes a method of reducing a memory footprint of a database table having multiple rows and one or more columns, in which each of the one or more columns has a cardinality, and the cardinality is a total number of different values in the rows of each column. The method includes comparing the cardinality with a total number of possible values in the rows of at least one column based on a width of the column. The method also includes reducing the width of the column if the cardinality is less than a threshold based on the total number of possible values in the rows of the column.

REFERENCES:
patent: 6009432 (1999-12-01), Tarin

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