Synchronization using commitment

Details Synchronization using commitment Synchronization using commitment

2011-07-26

2011-07-26

Al-Hashemi, Sana (Department: 2156)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C707S793000, C707S793000

Reissue Patent

active

RE042578

ABSTRACT:
A method of sharing a file object among a plurality of competing processes, the file object having a content that at least one competing process may need to adjust so that the file is suitable for the operating environment of the competing process. To help make an adjustment, the file object includes a state attribute that indicates whether or not the file is committed and whether the file is in an inconsistent state. If the file contents are suitable for the specific process and the file object is not committed, the file can be committed by the specific process. If the file contents are not suitable for the specific process and the file object is not committed, the file is locked, set to inconsistent, adjusted, committed by the specific process and then unlocked. This process improves concurrency of the competing processes and reduces message overhead.

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patent: 6088694 (2000-07-01), Burns et al.
patent: 6301601 (2001-10-01), Helland et al.
patent: 6449627 (2002-09-01), Baer et al.
patent: 6526416 (2003-02-01), Long
patent: 6970883 (2005-11-01), Ku et al.
Papadopoulos, C.V.; discloses heterogeneity of distributed databases integrating commit protocols; Distributed Computing Systems, 1994., Proceedings of the 14th International Conference; Jun. 21-24, 1994; pp. 380-386.
Inseon Lee; Yeom, H.Y. discloses a single phase distributed commit protocol for main memory database systems Parallel and Distributed Processing Symposium., Proceedings International, IPDPS 2002, Abstracts and CD-ROM, 2002; pp. 14-21.

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