Patent
1993-11-23
1996-12-17
Amsbury, Wayne
395650, 395800, G06F 1730
Patent
active
055863108
ABSTRACT:
When an update is made to a data record in a distributed, replicated data processing system, the update is first applied to a primary copy of the data record before being applied to any other copy to ensure that updates are applied in the correct time sequence. Apparatus and a method of operating a distributed data processing system is provided in which responsibility for the primary copy is transferable to whichever processor in the system requires most frequent update access, providing improved performance and availability of data. The primary copy may be partitioned and distributed across the system.
REFERENCES:
patent: 4432057 (1984-02-01), Daniell et al.
patent: 4620276 (1986-10-01), Daniell et al.
patent: 4714992 (1987-12-01), Gladney et al.
patent: 4714996 (1987-12-01), Gladney et al.
patent: 4853843 (1989-08-01), Eckland
patent: 5261094 (1993-11-01), Everson et al.
Stumm et al., "Algorithms Implementing Distributed Shared Memory", Computer, vol. 23, No. 5, May, 1990, pp. 54-64.
Stumm et al., "Fault Tolerant Distributed Shared Memory Algorithms", Proceedings of the Second IEEE Symposium on Parallel and Distributed Processing 1990, 9-13 Dec. 1990, Dallas Texas, pp. 719-724.
Michael Nelson, "Network Transparency", UNIX Review, vol. 8, No. 11, Nov., 1990, pp. 66-71.
Hilal et al., "Designing Large Electronic Mail Systems", 8th International Conference on Distributed Systems, 13-17 Jun., 1988, San Jose, Ca., pp. 402-409.
Russell et al., "Distribution+Persistence=Global Virtual Memory", Proceedings of the Second International Workshop on Object Orientation in Operating Systems, 24-25 Sep. 1992, Dourdon, France, pp. 96-99.
Caughey et al., "Implementing Fault -Tolerant Object Systems on Distributed Memory Multiprocessors", Proceedings of the Second International Workshop on Object Orientation in Operating Systems, 24-25 Sep. 1992, Dourdon, France, pp. 172-179.
Sarin et al., "A Flexible Algorithm For Replicated Directory Management", 9th International Conference on Distributed Computing Systems, 5-8 Jun. 1989, Newport Beach, Ca, pp. 456-464.
C. H. C. Leung et al, "Analysis and Optimisation of Data Currency and Consistency in Replicated Distributed Databases," The Computer Journal, vol. 28, No. 5, 1985 pp. 518-523.
E. Babb, "Implementing a Relational Database by Means of Specialized Hardware," ACM Trans. Database Systems, vol. 4, No. 1, Mar. 1979, pp. 1-29.
C. J. Date "What is a Distributed Database System, Part I," The Relational Journal, Issue 1, Jun. 1987.
C. J. Date "What is a Distributed Database System, Part II," The Relational Journal, Issue 2, Oct. 1987.
S. H. Son, "Replicated Data Management in Distributed Database Systems" Sigmod Record, vol. 17, No. 4, Dec. 1988.
B. Lindsay et al, "A Snapshot Differential Refresh Algorithm," IBM Research Report, RJ 4992, Jan. 1986.
A. Scherr, "Structures for Networks of Systems," IBM Systems Journal, vol. 26, No. 1, 1987.
U. Inoue et al., "RINDA-A Relational Database Processor for Non-Indexed Queries", 1st International Symp. Darabase Systems for Advanced Applications, Apr. 1989, pp. 382-386. in Japanese Abstract Considered.
Y. Huang et al., "A Competitive Dynamic Data Replication Algorithm", IEEE Conf. No. 9, Apr. 19, 1993, pp. 310-317.
B. Ciciani et al., "Analysis of Concurrency-Coherency Control Protocols for Distributed Transaction Processing Systems With Regional Locality", IEEE Transactions on Software Engineering, vol. 18, No. 10, Oct. 1, 1992, pp. 899-914.
Amsbury Wayne
International Business Machines - Corporation
Klein Esther E.
Lintz Paul R.
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