Testing activities performed during the phases

The following testing activities should be performed during the phases:

1. Requirements Analysis

- Determine correctness
- Generate functional test data.

2. Design

- Determine correctness and consistency
- Generate structural and functional test data.

3. Programming/Construction

- Determine correctness and consistency
- Generate structural and functional test data
- Apply test data
- Refine test data

4. Operation and Maintenance

- Retest