Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2006-02-07
2006-02-07
Peikari, B. James (Department: 2189)
Data processing: database and file management or data structures
Database design
Data structure types
C714S006130, C711S156000, C711S162000
Reexamination Certificate
active
06996586
ABSTRACT:
Disclosed is a technique for reducing an amount of data transferred. A first indicator is maintained for each source block of data to indicate whether the source block of data has been updated in source storage since the source block of data was last transferred to target storage. A second indicator is maintained for each target block of data in target storage to indicate whether the target block of data has been updated in target storage since the target block of data was overwritten by a corresponding source block of data. When transferring data from the source storage to the target storage, each source block of data for which a first indicator has been set to indicate that the source block of data has been updated is transferred and each source block of data that corresponds to a target block of data for which a second indicator has been set to indicate that the target block of data has been updated is transferred.
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Brown Theresa Mary
Fienblit Shachar
Hayardeny Amiram
Jarvis Thomas Charles
Matosevich Rivka Mayraz
Davda Janaki K.
International Business Machines - Corporation
Konrad Raynes & Victor LLP
Peikari B. James
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