Method for the dynamic replication of data under distributed...

Details Method for the dynamic replication of data under distributed... Method for the dynamic replication of data under distributed...

G - Physics

06

F

354/233

G06F 13/00 (2006.01) G06F 17/30 (2006.01) H04L 29/00 (2006.01)

Patent

CA 1180458

Abstract A method for dynamic replication of data under distributed system control to control the utilization of resources in a multiprocessing, distributed data base system. Previously, systems providing for data repli- cation at nodes of a multiprocessing, distributed data base system required that a central node maintain control, or that replicated data be synchronized by immediately conforming all copies of an updated data item. By this invention, requests for access to data of a specified currency are permitted and conformation of updated data is selectively deferred by use of a control procedure implemented at each node and utilizing a status and control (SAC) file at each node which describes that node's view of the status for shared data items at other nodes.

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