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Dynamic modelling: state diagrams
A state diagrams allow you to further explore operations and attributes which need to be defined for an object. They comprises of sets of states which an object is in, and events which take object from one state to other states.
State: An object can have one or more than one state-stable points in its life, expressed by object's attributes and relationships.
Action / event: Something which happens to an object. Atomic, in that it either has occurred or it hasn't. An event causes an action.
Transition:
A jump among states, labelled with corresponding action.
Figure: Notation for State Diagram
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