Method for consistent multidatabase transaction processing

Details Method for consistent multidatabase transaction processing Method for consistent multidatabase transaction processing

1987-07-24

1989-11-14

Shaw, Gareth D.

Boots, shoes, and leggings

3642824, 3642822, 3642681, G06F 900

Patent

active

048811661

ABSTRACT:
Disclosed is a concurrency control method and related system for permitting the correct execution of multiple concurrent transactions, each comprising one or more read and/or write operations, in a heterogeneous distributed database system. Read and write operations are processed at the required sites if no site cycles are detected. If any site cycles are detected in a read operation, then new sites are searched for. If any site cycle is detected for any of the sites for a write operation, then the transaction is aborted.

REFERENCES:
patent: 4627019 (1986-12-01), Ng
Breitbart et al, "ADDS-Heterogeneous Distributed Database System", Distributed Data Sharing Systems, 1985, pp. 7-24.

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