SYSTEM AND METHOD FOR SYNCHRONIZING DATA BASES BETWEEN PLURAL DEVICES

摘要

PROBLEM TO BE SOLVED: To update a data base by easily extracting non-updated information at high speed in the order of time sequence through utilizing a log file in a FIFO form. SOLUTION: This system has a log file 14 for storing a syntax described in a data base language, an updating processing part 111 for replacing received update data with an SQL language when there is the updating request of a data base 13 from anywhere except for a network 4 to a device 1, updating the data base 13 of the present device by executing that syntax described in the SQL language and preserving that syntax in the log file 14 in the order of updating as updated information and a synchronous processing part 112 for periodically retrieving whether the updated information is preserved in the log file 14 or not and sending the updated information stored in the log file 14 to a device 2 so as to update a data base 23 of the device 2 when the updated information is preserved.