Commitment chains for conflict resolution between...

Details Commitment chains for conflict resolution between... Commitment chains for conflict resolution between...

2011-08-16

2011-08-16

Abel-Jalil, Neveen (Department: 2165)

Data processing: database and file management or data structures

File or database maintenance

Synchronization

Reexamination Certificate

active

08001078

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).

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