Chapter 7 Appendix B

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Elements of Activity Diagrams: Activity

A behavior that an object carries out while in a particular state

Elements of Activity Diagrams: Merge

A circular symbol where different paths converge

Elements of Activity Diagrams: Branch

A diamond symbol containing a condition whose results provide transitions to different paths of activities

Process Modeling: Activity Diagrams

Can be used to show the logic of a use case.

Process Modeling: Activity Diagrams

Clearly show parallel and alternative behaviors.

Process Modeling: Activity Diagrams: Swimlanes

Columns representing different organizational units of the system.

Use Activity Diagrams to: 1

Depict the flow of control from activity to activity.

Use Activity Diagrams to: 3

Help in identifying extensions in a use case.

Use Activity Diagrams to: 2

Help in use case analysis to understand what actions need to take place.

Use Activity Diagrams to: 5

Model the sequential and concurrent steps in a computation process.

Use Activity Diagrams to: 4

Model work flow and business processes.

Activity: from implementation level

Represents a Method or Class.

SwinLane

Represents the organizational unit responsible or certain activities. Vertical axis separating the swim lanes is time(length of line determines time frame).

Process Modeling: Activity Diagrams

Show the conditional logic for the sequence of system activities needed to accomplish a business process.

Activity Diagram

Shows the conditional Logic for the sequence of system activities needed to accomplish a business process.

Process Modeling: Activity Diagrams: Fork

The beginning of parallel activities

Process Modeling: Activity Diagrams: Join

The end of parallel activities

Activity Diagrams Learning Objectives

Understand how to represent system logic with activity diagrams.


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