Patent №
US 4,714,992
Granted
1987-12-22
Filed 1985
Owner
INTERNATIONAL BUSINESS MACHINES CORPORATION, ARMONK, NEW YORK, 10504, A CORP OF NEW YORK
Lab
AI components
1
planning
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
06801897
In a distributed processing system network in which at least one node operates as a source location having access to data objects of a database, and at least one other node operates as a replica location storing replicas of data objects from the source location, managing obsolescence of the replicas is performed by having the replica locations submitting requests to the source location for ascertaining obsolescence of data objects. The source location, responsive to a request from a requesting replica location, extracts identifiers of a set of obsolete objects and communicates them to the requesting replica location. Upon receiving the identifiers, the requesting location renders inaccessible those data objects corresponding to the identifiers received. The source location then removes those identifiers that have been communicated to the requesting replica location.
AI classification
Ownership
INTERNATIONAL BUSINESS MACHINES CORPORATION, ARMONK, NEW YORK, 10504, A CORP OF NEW YORK
assignment · 45190104
Assignors
GLADNEY, HENRY M., LORCH, DOUGLAS J., MATTSON, RICHARD L.
On an employer assignment, the assignors are typically the inventors.