week 9 System Modeling

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Question		Answer
Waht is System Modeling start learning		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? start learning		External, Interaction, Structural, Behavioral.
explain external system perspective start learning		External: context or environment
Explain interaction system perspective start learning		system-environment, component-component interactions
Explain structural system perspective start learning		organization of a system or the structure of the data being processed
Explain behavioural system perspective start learning		Behavioral: dynamic behavior of a system and how it responds to events
what tools do we have for modeling systems start learning		Standard modeling language for object-oriented modeling: Activity diagram, Use case diagram, Sequence diagram, Class diagram, State diagram.
What is a context model start learning		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? start learning		User interaction, Interaction between system developed and other system(s), Interaction between components of the system.
explain Interaction Models: Use Cases start learning		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 start learning		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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