1. INFS 6225 Object-Oriented Analysis & Design
Chapter 6: Behavioral Modeling

2. Behavioral Models Diagram underlying business process
Represent internal behavior of system
Iterative
Technology-independent (Analysis Phase)

3. 3 Types Sequence Communication Behavioral State
Interaction – underlying details of Use Case
Changes that occur in underlying data
Sequence
Communication
Behavioral State

4. Review of OO Concepts Patient Class Objects of Patient Class:
Jim Maloney
Mary Wilson
Theresa Marks
Attributes:
- Name
- Address
- Birthdate
Methods (or Operations)

5. Type 1: Sequence Diagrams
Sequence of events for ONE Use Case
Show sequence of messages passed between objects

6. Sequence Diagram Example
Make
Appointment
Becomes . . .

7. Sequence Diagram Components
AN ACTOR
AN OBJECT
A LIFELINE
A FOCUS OF CONTROL
A MESSAGE
OBJECT DESTRUCTION
anObject:aClass
aMessage() x

8. Practice Exercises

9. Type 2: Communication Diagrams
Show communication flows among objects
An object diagram
Show patterns of activity

10. Communication Diagram Example

11. Communication Diagram Components
AN ACTOR
AN OBJECT
AN ASSOCIATION
A MESSAGE
anObject:aClass
aMessage()

12. CRUD Analysis

13. Practice Exercises

14. Type 3: Behavior State Diagrams
Show different states through which an object passes during its life
Used to show how an instance evolves over time

15. Behavioral State Terminology
State – value of attributes at specific point in time
Event – stimulus that changes an object’s value
Transition – movement of object from one state to another
Action – Nondecomposable (Atomic) process that cannot be interrupted
Activity – Can be decomposed & can be stopped/started by Actions

16. Behavioral State Example

17. Behavioral State Components
A STATE
AN INITIAL STATE
A FINAL STATE
AN EVENT
A TRANSITION
aState
anEvent

18. Practice Exercises