Solution

Stages of Object-Oriented Design (OOAD) Process

1. System Analysis / Requirements

• Use-case modelling, identify actors, scenarios.

2. Object/Entity Identification

• Nouns → objects/classes, verbs → methods. CRC cards.

3. Object Modelling

• Class diagram (classes, attributes, associations, inheritance)
• Relationship identification (is-a, has-a)

4. Dynamic Modelling

• Sequence diagrams, State charts, Collaboration diagrams.

5. Functional Modelling

• What system does: activity diagrams, DFD for OO.

6. Conceptual / Architectural Design

• Subsystem decomposition, reuse library design.

7. Detailed Design & Implementation

• Refine classes, design interfaces, code in OO language (Java/C++), test.

Iterative, incremental, uses UML throughout.