Isolation levels and compensating transactions in an information system
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United States of America Patent
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May 15, 2001
Grant Date -
N/A
app pub date -
Mar 12, 1998
filing date -
Mar 12, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A transaction system implemented on a server machine for maintaining consistency in an information system supporting asynchronous transactions. The information system includes a database shared among a plurality of users and implemented on a client machine. The transaction system is invoked at run-time for a transaction where the transaction includes one or more subtransaction steps. The transaction system includes a graphical user interface for receiving a user defined isolation level selection for executing a transaction between the server machine and the database or application, a persistent service for storing object state information for each object affected in the execution of each subtransaction step and a state verification service for verifying the state of each object affected by a subtransaction step to verify the state of the object is the same as a last time the object was seen in the transaction.
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