| 摘要 |
PURPOSE:To not only reduce the traffic jam of a data way but also increase the fetching speed of master data so as to make the responding time of various kinds of control shorter, by installing a master file and stock data file to each of necessary computer. CONSTITUTION:A master file and stock data file 10A and 10B are provided at each of necessary computers 8A and 8B and, when the master data and stock data of the files are to be updated, the master and stock data files 10A and 10B of each related computer 8A and 8B are updated by using a data way 13. Fetching of the master data and stock data is carried out inside the computers 8A and 8B and, at the same time, the master and stock data files 10A and 10B of a master computer, which are decided in advance, are copied in each computer 8A and 8B when the computers 8A and 8B rise or an optional request is made. Thus the data way 13 is not used when the master and stock data are fetched. Therefore, the traffic jam of the data way 13 is reduced and the fetching circuit of the master and stock data is simplified. As a result, fetching of the master and stock can be carried out at a high speed. |
