DIFFERENTIAL DISTRIBUTION RECORD REFLECTION SYSTEM BETWEEN DIFFERENT TYPE RDBMS

摘要

PROBLEM TO BE SOLVED: To easily carry out replication and automatically correct a difference between a master DB and a replica DB for an improvement in the reliability of the replica DB.;SOLUTION: A computer 2 having a replication function for creating a plurality of replica DBs 107 serving as replicas of the master DB 103 distributes attached address information for specifying a record on the replica DB side 107 even when an univocally classifiable key is not available in a table of a distribution object, so that replication can be carried out. When there is a difference between record contents of the master DB 103 and those of the replica DB 107, all data of the master DB 103 are automatically delivered again by one operation. In this way, the reliability of the replica DB 107 is improved.;COPYRIGHT: (C)2006,JPO&NCIPI