04853843 is referenced by 284 patents and cites 7 patents.

An object-oriented, distributed data base system separates into a plurality of virtual partitions following communication failure between sites accessing the data base. Each partition accesses a separate copy of an initial data base and independently updates groups of data objects included in the data base to add new versions of data objects to the data base. Each virtual partition maintains a copy of all previous versions of data objects and maintains a change list describing all group updates that it executes. Following restoration of communication between sites, each virtual partition merges the data bases maintained by separate partitions to form a consistent merged data base permitting versions of data objects and collections of data objects created by any one of the separate virtual partitions to be identified and accessed in the merged data base.

Title
System for merging virtual partitions of a distributed database
Application Number
7/136174
Publication Number
4853843
Application Date
December 18, 1987
Publication Date
August 1, 1989
Inventor
Denise J Ecklund
Beaverton
OR, US
Agent
Robert S Hulse
Daniel J Bedell
Assignee
Tektronix
OR, US
IPC
G06F 15/20
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