Partially replicated distributed database with multiple levels of remote clients
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jun 22, 2004
Grant Date -
Jun 5, 2003
app pub date -
May 20, 2002
filing date -
Feb 28, 1997
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method of and system for collecting, storing, and retrieving data in a data base management system. The database management system includes a master database server (4), at least one workgroup server (315), and a plurality of workgroup user clients (310). The workgroup server (315) is interposed between the master database server (4) and said workgroup user clients (310). The method creating a transaction in a local database resident on one of the workgroup user clients (310), entering the transaction into a transaction log resident on the workgroup user client (310), and creating a transaction file corresponding to the transaction in an outbox of said workgroup user client (310). Next, the transaction file is copied to an inbox identified to the workgroup user client (310) and updating the transaction file into a workgroup database (305) resident on the workgroup server (315). The workgroup database (305) includes a transaction log.
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