In the Unified Modeling Language, an action
is a named element that is the fundamental unit of executable functionality. Actions take a set of inputs, which may be empty, and convert them to a set of outputs, which in turn may also be empty.
Action types
• On Entry: occurs when an activity is entered. • Do: occurs while an activity is occurring. These are the steps within the activity. • On Exit: occurs when you leave an activity. • On Event: occurs upon a specific event. ==References==