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Pre-locking scheme for allowing consistent and concurrent workflow process execution in a workflow management system

  • US 6,078,982 A
  • Filed: 03/24/1998
  • Issued: 06/20/2000
  • Est. Priority Date: 03/24/1998
  • Status: Expired due to Term
First Claim
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1. A workflow management system, comprising:

  • workflow process that includes at least one sequence of workflow actions including a first action and a second action;

    workflow database for holding a data item associated with the workflow process;

    workflow engine that controls accesses to the work flow database by scheduling the first action and the second action for concurrent execution if the first action and second action both write the data item and by scheduling the first and the second action for non-concurrent execution by locking the data item before the first action is executed and then unlocking the data item after the first action is completed such that the second action cannot access the data item until the first action has completed if one of the first or second action reads the data item and another of the first or second action writes the data item.

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