| 摘要 |
PURPOSE:To shorten the response time of each transaction by restoring a file to a state in which there is no request to update the file of a transaction in process and then by making it possible to accept a request to update the following transaction. CONSTITUTION:When transactions are generated at terminals T1-Tn, CPU performs processing regarding every transaction via communication controller CCP and generates a group of files to be updated in mass storage memory units DA1, DA2 doubly. In update of every file, mass storage memory unit DAj stored sequentially with updata elements as hysteresis data is connected to CPU and between unit DAj and units DA1, DA2, file control method FC is provided. Then, the display that an action requesting file updata is in process comes into effect through half-update display method UFC and on the basis of the in-process or completion state, method UFC is brought under the control of interface control part IFC , so that a request to update the following transaction can be accepted on the basis of the hysteresis data. |
