Time based expiration of data objects in a store and forward rep

Details Time based expiration of data objects in a store and forward rep Time based expiration of data objects in a store and forward rep

1996-07-12

1998-08-11

Black, Thomas G.

Data processing: database and file management or data structures

Database design

Data structure types

707 10, 707201, G06F 1730

Patent

active

057942536

ABSTRACT:
Systems and methods of time based data expiration in a replication environment are presented. The systems and methods of the present invention allow different age limits to be set on each individual server in a network. A network can therefore be configured with some servers having no age limit and other servers having a wide range of differing age limits. Systems and methods for handling mixed data sets that include some data objects which are allowed to expire and some data objects which do not expire are also presented. In all cases, the time based data expiration systems and methods are designed to insure proper operation of the replication process and any associated data recovery process. Specifically, expired data will not be recovered via any data recovery mechanism and servers will not attempt to recover missing data from a server that has expired that data.

REFERENCES:
patent: 5649195 (1997-07-01), Scott et al.
Yavin, D. "Replication's Fast Track," BYTE, Aug. 1995, pp. 88a-88d, 90.

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