Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2005-12-29
2009-02-10
Vital, Pierre M (Department: 2169)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000, C707S793000, C707S793000
Reexamination Certificate
active
07490115
ABSTRACT:
A sequence of processing transactions operating on a cached data set, which depend on each other because they operate on the same items of data from the data set. The transactions are saved until the master copy of the data becomes available. The transactions are played back against the master copy until one of the played back transactions fails because another transaction which operated on the same items of data but against a separate cached copy and originating from another application, was successfully played back on the master copy at an earlier time. At this point, all subsequent transactions which depended on the failing transaction are rolled back on the cached copy (with appropriate failure reports generated) and activity resumes from there. “Chained” (optimistic) transactions can therefore be applied to cached data and can be allowed to progress by recording their dependencies so they can be undone when required.
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“Nested Transactions” OLE DB Programmer's Reference, (viewed Feb. 12, 2004).
Banks Andrew David James
Cobbett Michael
Vyvyan David Robnett
Wynn-Mackenzie Mark Andrew
Akerman & Senterfitt
International Business Machines - Corporation
Kabir Sheikh M
Vital Pierre M
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