Object Oriented Approach

Simple Use Case with an Actor 2 2

Use Case Diagram with Automation Boundary and Alternate Actor Notation 3 3

All Use Cases Involving Customer as Actor 4 4

Use Cases of RMO Order Entry Subsystem 5 5

Activity Diagram— Telephone Order Scenario 6 6

Activity Diagram— Web Order Scenario 7 7

System Sequence Diagram (SSD) Notation 8 8

Repeating Message 9 9

Activity Diagram of the Telephone Order Scenario 10 10

Resulting SSD for the Telephone Order Scenario 11 11

SSD of the Web Order Scenario for the Create New Order Use case 12 12

Simple State Machine Diagram for a Printer 13 13

Composite States and Concurrency—States within a State 14 14

First-Cut State Machine Diagram for Order 15 15