Data processing: database and file management or data structures – Database design – Data structure types
Patent
1996-08-07
1999-10-26
Maung, Zarni
Data processing: database and file management or data structures
Database design
Data structure types
39520076, 395821, 395892, 395893, 707200, 707203, 707204, G06F 100, G06F 1500, G06F 1730, G06F 1562
Patent
active
059742380
ABSTRACT:
An apparatus is disclosed for performing dynamic synchronization between data stored in a handheld computer and a host computer, each having a plurality of data sets including at least one common data set, each computer having a copy of the common data set. The handheld computer has a processor, a communication port, and a data synchronization engine. The data synchronization engine has a pseudo-cache and one or more tags connected to the pseudo cache. Data is synchronized whenever data is written to main memory and/or when the associated pseudo-cache tag is invalidated. By strict adherence to a set of protocols, data coherency is achieved because the system always knows who owns the data, who has a copy of the data, and who has modified the data. The data synchronization engine resolves any differences in the copies and allows the storage of identical copies of the common data set in the host computer and in the handheld computer.
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Compaq Computer Corporation
Maung Zarni
Thomson William D.
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