Impact calculation for version management in a distributed information service
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United States of America Patent
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-
Dec 22, 1987
Grant Date -
N/A
app pub date -
Nov 26, 1985
filing date -
Nov 26, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a distributed processing system having a source node accessing data objects from a database and a replica node storing replicas of requested source data objects received from the source location, the impact to replicas caused by a change in a source data object is calculated by assigning a version number to the change. An identifier of the portion of the source database affected by the change is generated, as well as a list of replicas containing objects from the affected portion of the database. For a replica location communicating with the source location, a table of the replicas from the list is then recorded along with the version number for communicating to the replica location.
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