05404508 is referenced by 180 patents and cites 15 patents.

A system and method for maintaining a backup data base. An initial backup copy of a data base is made and stored separate from an active primary data base. Each time the primary data base is updated, audit information pertaining to the data base update is stored in non-volatile storage. A recovery processor continuously reads the audit information from the non-volatile storage and updates the backup data base accordingly, thereby maintaining a backup data base which is nearly up-to-date with the primary data base.

Title
Data base backup and recovery system and method
Application Number
7/986155
Publication Number
5404508
Application Date
December 3, 1992
Publication Date
April 4, 1995
Inventor
Ralph E Sipple
Shoreview
MN, US
Dennis R Konrad
Welch
MN, US
Agent
Mark T Starr
Charles A Johnson
LeRoy D Maunu
Assignee
Unisys Corporation
PA, US
IPC
G06F 15/40
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