Updatable result set for multiple joined tables

Details Updatable result set for multiple joined tables Updatable result set for multiple joined tables

2011-06-21

2011-06-21

Mofiz, Apu M (Department: 2161)

Data processing: database and file management or data structures

Database and file access

Query optimization

C707S715000, C707S999004, C707S999005

Reexamination Certificate

active

07966312

ABSTRACT:
A technique for providing an updatable result set from multiple joined tables derived from a plurality of databases includes testing for at least one unique index from each of the multiple joined tables. A technique for providing an updatable result set from multiple joined tables that may include null values for outer-joined tables includes testing for a connection to the unique indexes and the null values.

REFERENCES:
patent: 6496819 (2002-12-01), Bello et al.
patent: 6553371 (2003-04-01), Gutierrez-Rivas et al.
patent: 6615206 (2003-09-01), Jakobsson et al.
patent: 7254574 (2007-08-01), Cunningham et al.
patent: 2005/0125387 (2005-06-01), Fish et al.
patent: 2006/0218128 (2006-09-01), Muras
patent: 2007/0073759 (2007-03-01), El-Sabbagh

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