Software Engineering
Difference between RAD Model and Spiral Model.
RAD vs Spiral Model
| Feature | RAD Model | Spiral Model |
|---|---|---|
| Main Objective | Rapid development | High assurance |
| Early-stage Planning | Not necessary | Required |
| Documentation | Limited | Detailed |
| Requirements Specification | Time-boxed release | Specified in the beginning |
| Project Size | Large and small | Large |
| Risk | Low | Medium to high |
| Team Size | Small | Large |
| Flexibility to Change | Easy | Not that difficult |
| Overlapping of Phases | Possible | Not possible |
| Testing | After coding | End of engineering phase |
| Cost | Low | Very expensive |
| Customer Involvement | Only at the beginning | High |
| Maintenance | Easy | Typical |
| Reusability | Offers reusability | Possible to some extent |