| 摘要 |
PROBLEM TO BE SOLVED: To provide a replication system and a program therefor which can set complex extraction conditions, customize an internal structure and lighten the load of a disk capacity of a master server, by using a proprietary replication function. SOLUTION: The system comprises an extracting conditions database for storing and holding the extracting the conditions for extracting data to be registered into each replica database from a master database; an extracting means for extracting changed data to be registered into each replica database, respectively, based on the extracting conditions stored and held in the extracting condition database, when the registered data in the master database is changed; and a changed data transmitting means for transmitting the changed data to each replica terminal, in response to requests from respective replica terminals, respectively. COPYRIGHT: (C)2005,JPO&NCIPI
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