| 摘要 |
PROBLEM TO BE SOLVED: To dispense with transmission of the recorded contents itself to other server client system whenever record is changed on any local side, to order only the necessary recorded contents when they are necessary, to remarkably reduce transmitted data quality and to property manage each database on the local side as shared resources. SOLUTION: A server device 21 on the side of each branch LAN 2 transmits only record change information when the recorded contents in the present database are changed by receiving a request from its client. The server device 21 which receives the record change information stores the information in an information management table 24, when the record is the one to receive the record change information in the case of receiving a record access request from the client, requests transmission of the record to its information origin, receives the record after change transmitted in response to the request and transmits it to the client at a requesting origin.
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