Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2007-06-05
2007-06-05
Al-Hashemi, Sana (Department: 2164)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000, C707S793000, C707S793000
Reexamination Certificate
active
11130628
ABSTRACT:
A method and system for synchronization of data stores is described. A synchronization initiator sends a sync key to a synchronization partner requesting to synchronize to some checkpoint. An integer is used as the sync key. When the sent sync key is zero the synchronization partner performs an initial synchronization. When the sent sync key is a value other than zero, the synchronization partner attempts to synchronize to the desired state. The value of the sync key is incremented only upon successful synchronization. A sync server can also include a sync key with change update notifications sent to a sync client, which the client can use to determine if the update notification is a valid update from the current sync state or is a delayed and obsolete update that should be discarded.
REFERENCES:
patent: 5991771 (1999-11-01), Falls et al.
patent: 6513050 (2003-01-01), Williams et al.
patent: 6799322 (2004-09-01), Sato
patent: 6810405 (2004-10-01), LaRue et al.
patent: 2001/0056438 (2001-12-01), Ito
Flanagin Stephen D.
Thomas Edward Eric
Al-Hashemi Sana
Grace Ryan T.
Merchant & Gould P.C.
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