1. SOFTWARE ENGINEERING LECTURE 2
Just a few software lifecycle models here...

2. THE BASIC WATERFALL MODEL
Requirement analysis
Design
Implementation
Testing
Maintenance

3. A MODIFIED WATERFALL MODEL
Requirement analysis - V&V
Design - V&V
Implementation
- V&V
Testing - V&V
V&V = Verification and Validation
Maintenance
- V&V

4. PROTOTYPING FOR REQUIREMENT ANALYSIS
Requirement analysis - V&V
Design - V&V
Quick Design - V&V
Implementation
- V&V
Quick Implementa-tion - V&V
Testing - V&V
V&V = Verification and Validation
Maintenance
- V&V

5. THE SPIRAL (ITERATIVE) MODEL
Risk analysis
Prototyping
Planning A2 B2 B1 A1 A0 B0 D1 C1 C2 D2 D3 C3
Client evaluation
and input
Model simulation
Operational prototype
Verification for next level

6. THE MANAGEMENT VIEW Survey the current situation in general
Study the existing system (if it exists)
Build new system: requirement analysis, design, implementation, testing
Installation
Maintenance and audit