| 摘要 |
PROBLEM TO BE SOLVED: To obtain a replication system capable of holding partial or overall data consistency between a database system and a different sort database system without adding an updating log table or a temporary table. SOLUTION: Changed data are extracted from a user table 13 arranged in a database system 11 of a computer 1 and including a column indicating an updating state and a column indicating a deleting state by a data extraction means 14 in the computer 1 on the basis of the column indicating the updating state and the column indicating the deleting state and transmitted to a computer 2 and a user table 22 in a different sort database system 21 in the computer 2 is updated by a data updating means 24 in the computer 2. COPYRIGHT: (C)2004,JPO
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