Computerised database system

Details Computerised database system Computerised database system

G - Physics

06

F

354/246

G06F 12/16 (2006.01) G06F 17/30 (2006.01)

Patent

CA 2014933

ABSTRACT OF THE DISCLOSURE COMPUTERISED DATABASE SYSTEM A communications package 25 is provided, e.g. for use with the IBM IMS transaction manager 17 and DB2 database manager 19. The communications package appears to the IMS transaction manager to be an associated resource manager, and it participates in 2-phase commit procedures involving both the IMS transaction manager and the DB2 database manager. The communications package receives copies of update statements applied to the DB2 database manager, and transmits them off-site before the updates are committed to the database. The communications package 25 may be used in a contingency arrangement in which a second IMS transaction manager 49 and a second DB2 database manager 51 maintain copies at a back-up site 13 of the databases at the main site 11. The update statements are transmitted by the communications package 25 to a tracking program 29, which logs them in a log 37. The logged update statements are used by an apply program 45 to update the copy databases.

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