Quality Assessment must permeate the process
Quality assessment (testing, verification and validation) should occur at each phase
to start:
- requirements validated against user needs
- requirements shown internally consistent
- requirements assured of high quality
for each phase:
- validate current phase against user needs
- use information from previous phase to verify current phase
Test plans should begin with requirements and be reviewed and refined with each phase
- test plans should be executed as early as possible to further facilitate early error detection