UML Component and Deployment Diagrams 1 Models

UML Component and Deployment Diagrams 1

Models, Views, and Diagrams A model is a complete description of a system from a particular perspective Use Case Diagrams Sequence Diagrams Scenario Diagrams Collaboration Diagrams Scenario Diagrams Statechart Diagrams Interactions Static views Use Case Diagrams State Diagrams Class Diagrams Models State Diagrams Object Diagrams State Diagrams Component Diagrams Deployment Diagrams Activity Diagrams Dynamic views 2

Diagrams Ø A diagram is a view into a model Presented from the aspect of a particular stakeholder Provides a partial representation of the system Is semantically consistent with other views Ø In the UML, there are nine standard diagrams Static views: use case, class, object, component, deployment Dynamic views: sequence, collaboration, statechart, activity 3

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Sequence number 7

Collaboration Diagram “who sends to whom” Ø Captures dynamic behavior (message oriented) – not “when” 8

Collaboration Diagram Ø Captures dynamic behavior (message oriented) Ø Purpose Model flow of control Illustrate coordination of object structure and control 9

Example: Change Flight Itinerary (Use case description) 10

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Sequence diagram for making a hotel reservation 13

Collaboration diagram for making a hotel reservation 14

UML Statechart Diagram Automata: 15

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action 18

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Statechart Example: Login part of an online banking system. Logging in consists of entering a valid social security number and personal id number, then submitting the information for validation. 33

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UML Activity Diagram 35

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Example: Activity Diagram – work flow, operation Ø Captures dynamic behavior (activity oriented) Building a house Syntax not defined in UML Semantics: activity • Evaluate expression • Send a method • Create or destroy an object Synchronization bars Parallel activities Change of state or attribute 50

Example Activity: “Withdraw money from an ATM. ” 51

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