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cooperative systems (process controlled by cooperative system (define…

- - - - every workstation has local rules
      - useful for partially specified process with well defined goals
      - for data moving from one workstation to another (sequence defined dynamically according to specification of the process)
    - - process specification is read by an execution engine (manual or automatic)
      - useful for repeatable processes;
      - process oriented (instead of data-oriented)
  - - - instantaneous state
      - correcness at the end
      - consistency, goal predicate
      - deadline, detection of exceptional events
    - - consistency of data
      - goal predicate must be reached
      - the WfMS must generate an execution plan that provides correctness.
    - - atomicity
      - consistency
      - isolation
      - durability
    - - all temporal requirements, termination constraints
      - temporal dependencies,absolute relative time
      - can be firm and soft
- - - - Worklist, what a participant has to do
    - - Data models
        
        Workflow control data
        
        relevant data
        
        application data outside the workflow
        
        external database tables