Transaction log management in a disconnectable computer and network
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Feb 20, 2001
Grant Date -
N/A
app pub date -
Sep 3, 1996
filing date -
Jul 20, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus are disclosed for managing a transaction log which contains updates representing operations performed on a database replica in a network of disconnectable computers. The invention provides for compression of the log by the identification and removal of redundant updates. Log compression removes apparent inconsistencies between operations performed on disconnected computers, reduces storage requirements on each computer, and speeds up transaction synchronization when the computers are reconnected. The invention also provides for restoration of prior versions of database objects using the log.
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