Q

Tracking row changes in DB2 tables

ISeries database expert Kent Milligan discusses how to track changes made to DB2 tables.

Is there a way to determine when a row in a table on iSeries has been added or changed? Currently there is no user field tracking this. I'm looking for some hidden DB2 function, like the RRN.
Activating journaling for this table would allow easy tracking of row changes. If an adding a new column is an option, you can add a column with the ROWID data type. DB2 will update this value each time a row is added or updated. In V6R1, DB2 for i5/OS supports the creation of a hidden timestamp column just for this purpose.
This was first published in April 2008

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