Semantically reducing the number of partitions involved in a...

Details Semantically reducing the number of partitions involved in a... Semantically reducing the number of partitions involved in a...

2006-02-14

2006-02-14

Gaffin, Jeffrey (Department: 2165)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C707S793000

Reexamination Certificate

active

06999967

ABSTRACT:
A method, computer program and system for joining two tables, t1and t2are described. Each table contains rows and columns and is divided into one or more partitions. A correlation function is calculated between a first correlated value column of table t1and a second correlated value column of table t2. Following a query request, a joining algorithm is used to join t1and t2, using a reduced set of partitions based in part upon the correlation function.

REFERENCES:
patent: 6081801 (2000-06-01), Cochrane et al.
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patent: 6263331 (2001-07-01), Liu et al.
patent: 6567802 (2003-05-01), Popa et al.
patent: 6609131 (2003-08-01), Zait et al.
patent: 6662175 (2003-12-01), Ghazal et al.

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