Device/system for processing shared data accessed by a plurality

Details Device/system for processing shared data accessed by a plurality Device/system for processing shared data accessed by a plurality

1996-02-16

1998-09-22

Kulik, Paul V.

Data processing: database and file management or data structures

Database design

Data structure types

707203, 707 8, G06F 1300

Patent

active

058130160

ABSTRACT:
In accessing shared data in a shared storage device from a plurality of systems, the access is prevented from concentrating on one system without the necessity of exclusive control such as a lock mechanism, etc. Predetermined shared data in a network is all updated by a predetermined shared data updating unit in a first data processing device. The update result is written by a version data writing unit to the update storage device. If the predetermined shared data is referred to in the predetermined shared data referring unit in the second data processing device, the referring operation is performed by the predetermined shared data reference control unit on the predetermined shared data of one version prior to the latest version in the shared storage device, thereby requiring no lock mechanism.

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