TRIGGER-BASED DATABASE CHANGE TRACKING METHOD FOR KEEPING DATA CONSISTENCY DURING TRANSACTIONAL REPLICATION AND SYSTEM THEREOF

摘要

A change tracking technique is used to maintain the consistency of the source data with the destination data during transactional replication. A first functional characteristic is that it is a transactional database replication technique. A second characteristic is that the technique supports an incremental tracking of transactional states of the source system. A third characteristic of the technique is that it utilizes triggers to track changes while satisfying the first two characteristics.