| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a processing load of a device in a process which synchronizes information. <P>SOLUTION: An information synchronization system 1 comprises a first master information storage unit 11 that stores master information; an update processing unit 12 that performs an update process of the master information; a first update history storage unit 13 that stores a time sequence of update histories of the master information; a first update request response unit 14 that returns the update history stored in the first update history storage unit 13 to a second device 20 based on an original point time stamp which indicates an original point for update; a second master information storage unit 21 that stores second master information being data synchronized with the master information; an original point time stamp storage unit 22 that stores the original point time stamp; an update history requesting unit 23 that requests the update history from the original point time stamp to a first device 10; a synchronous update processing unit 24 that performs an update process for synchronization and that stores a time stamp of the latest update history which has completed synchronization as the original point time stamp in the original point time stamp storage unit 22. <P>COPYRIGHT: (C)2012,JPO&INPIT |
