week 9 System Modeling

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empezar lección

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