INTRODUCTION TO SOFTWARE ENGINEERING
OVERVIEW OF SOFTWARE ENGINEERING
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Question
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State Event
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External Event
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Internal Event
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Temporal Event
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Detailed explanation-1: -Event-driven modeling shows how a system responds to external and internal events. It is based on the assumption that a system has a finite number of states and that events (stimuli) may cause a transition from one state to another.
Detailed explanation-2: -System reactions to external events are represented by the state transition diagram. Using the state transition diagram the complete details of an object can be visualized.
Detailed explanation-3: -A transition denotes a change in the state of an object. If an object is in a certain state when an event occurs, the object may perform certain activities subject to specified conditions and change the state. In this case, a state−transition is said to have occurred.