Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2006-04-04
2006-04-04
Alam, Shahid (Department: 2162)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000, C707S793000, C709S248000
Reexamination Certificate
active
07024428
ABSTRACT:
A centralized synchronization system synchronizes data stored in multiple devices distributed over a relatively unreliable network, to provide automatic recovery from synchronization failures. The synchronization system maintains a truth database indicating the true state of the data and action tables indicating actions to be performed on each of the devices during a next update of the data. Data is retrieved from the devices over the network, and actual states of the data are determined from the action tables and the retrieved data. The truth database and action tables are updated accordingly. An effective action table is then generated to account for any of the devices which were offline during the most-recent synchronization. The truth database and effective action tables are saved to a central database in an atomic transaction. The effective action tables are then used to update the data on the devices over the network.
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Castellano Luca Andrea
Huang Alex Xueyuan
Alam Shahid
Fleurantin Jean Bolte
Openwave Systems Inc.
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