| 摘要 |
PROBLEM TO BE SOLVED: To secure the real time ability of stock order and to save the manpower of a job by automatically accumulating stock order data in a DB server when communication with a host computer is impossible and automatically retransmitting stock data accumulated with the communication at the time of resumption of the host computer. SOLUTION: When a stock order is inputted from a client terminal 10, stock order data are transmitted to a repeating server 30. At that time, the repeating server 30 refers to the communication state flag of the host computer 50. When the communication state flag cannot be communicated, the repeating server 30 gives a stock order data accumulation request to the DB server 40. Then, the DB server 40 gives a retransmission method inquiry request to the client terminal 10. The client terminal 10 inquires of the retransmission method of the stock order, and returns the result to the DB server 40. Accumulated stock order data are automatically retrasmitted at the time of communication resumption with the host computer 50. |
