Handling the dataflow in business process models

This chapter stresses the importance of the dataflow in business process models and illustrates a notation called DMA that is meant to fulfill two major goals: promoting the integration between business processes and information systems and leveraging the dataflow to provide flexibility in terms of human decisions. The first goal is fulfilled by considering both tasks and business entities as first-class citizens in process models. Business entities form the dataflow that interconnects the tasks: tasks take the input entities from the input dataflow and deliver the output entities to the output dataflow. Human decisions encompass the selection of the input entities when a task needs more than one, and the selection of the task with which to handle the input entities when two or more tasks are admissible. DMA provides a number of patterns that indicate how tasks affect the dataflow. In addition, two compound patterns, called macro tasks, can be used to represent task selection issues. An example related to an order handling process illustrates the notation.