week 9 System Modeling

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question		réponse
Waht is System Modeling commencer à apprendre		The process of developing abstract models of a system, with each model presenting a different view or perspective of that system (Sommerville)
What are the 4 perspectives of a system? commencer à apprendre		External, Interaction, Structural, Behavioral.
explain external system perspective commencer à apprendre		External: context or environment
Explain interaction system perspective commencer à apprendre		system-environment, component-component interactions
Explain structural system perspective commencer à apprendre		organization of a system or the structure of the data being processed
Explain behavioural system perspective commencer à apprendre		Behavioral: dynamic behavior of a system and how it responds to events
what tools do we have for modeling systems commencer à apprendre		Standard modeling language for object-oriented modeling: Activity diagram, Use case diagram, Sequence diagram, Class diagram, State diagram.
What is a context model commencer à apprendre		Early on, decide on the system boundaries, Functionality that should be included in the system, Functionality provided by the system’s environment.
What are interaction models? commencer à apprendre		User interaction, Interaction between system developed and other system(s), Interaction between components of the system.
explain Interaction Models: Use Cases commencer à apprendre		Model interaction between a system and external actors, A use case is a simple scenario that describes what a user expects from the system
explain Sequence Diagrams commencer à apprendre		Model interactions between system components (possibly external agents as well), Show the sequence of interactions that take place during a particular use case.

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