File decentralization system

Abstract

Abstract PURPOSE:To attain the effective application of the file resources by providing a file control part to update a control file and controlling collectively the data files decentralized to each subprocessor through a main processor for reference and updating. CONSTITUTION:A control file 2 is produced in a file production state, and the presence information on each data record is edited into the control data record and registered in the file 2. A sub-CPU 10a produces a reference request for the data record and the relevant data record is not included in its own decentralized file 15a. In such a case, a data control part 12 informs the reference conditions and asks a main CPU 1 for reference. Thus a file control part 4 refers to the file 2 to transfer the designated data record to a sub-CPU 10b of the referred side and then to a sub-CPU 10a of the referring side. The sub- CPU 10a changes the received data record and sends it to the CPU 1, and the part 4 registers the presence information as a control data record. As a result, no duplex file is produced and therefore the file resources can effectively be applied.

Inventors

• 👤 Hiroshi Nakamura
• 👤 中村　啓

Bibliographic Details