Explain the reuse maintenance model with the help of a diagram.

Reuse maintenance model: This model is based on the principal  that maintenance could be viewed as an activity involving the reuse. of  existing program components. 

The reuse model has four main steps: 

1. Identification of the parts of the old system that are candidates for reuse.

2. Understanding these system parts.

3. Modification of the Old system parts appropriate to the new requirements.

4. Integration of the modified parts into the new system. 

With the five reuse model, the starting point may be any phase of the life cycle. The requirements, the design, the code or the test data :- unlike other