Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2004-11-10
2008-07-01
Mahmoudi, Tony (Department: 2165)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000, C707S793000, C711S162000
Reexamination Certificate
active
07395280
ABSTRACT:
A method for synchronizing data on a first device with data at a second device, includes: determining a pre-image of the data on the first device according to a filter after a previous synchronization with the data at the second device; determining a current image of the data at the second device according to the filter; determining a delta of the current image, where the delta comprises data that exists in the current image and has changed since the previous synchronization; instructing the first device to delete data that exists in the pre-image but not in the current image; and instructing the first device to UPSERT a union of the data that exists in the delta and the data that exists in the current image but not the pre-image. This is efficient in time and bandwidth resources while also providing consistent data integrity.
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Biswal Dilip Kumar
Cheng Isaac Kam-Chak
Chu Cecilia Oi-Lin
Clare Donald Lee
Mau Louis S. W.
Mahmoudi Tony
Sawyer Law Group LLP
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