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Business Process Management by Martyn A. Ould

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REPRESENTING ACTIONS

An action in a role is modelled with a small black box, suitably captioned, as in Figure 2.7. The action can start when its activating condition is met.

FIGURE 2.7 An action in a role with its adjoining states

When it is finished its post-condition is true. In Figure 2.7 we have shown the activating condition and the post-condition, by annotating the states before and after the action, but remember that we shall only caption states where it’s useful.

The fact that an action is shown as a black box is significant: it says that, as far as we are concerned in this model, we do not care how this action is carried out, so long ...

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