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Reuse Oriented Software Model

This model is based on the principle that maintenance could be viewed as an activity involving the reuse of existing program components. The reuse model has four main steps:

(i)    Identification of the parts of the old system that are candidate for reuse.
(ii)    Understanding these system parts.
(iii)    Modification of the old system parts being appropriate to the new requirements.
(iv)    Integration of the modified parts into the new system.

A detailed framework is required for the classification of components and the possible modifications. With the full reuse model the starting point may be any phase of the life cycle, be it the requirements, the design, the code or the test data-unlike other models. For example, in the quick-fix model, the starting point is always the code.

The reuse model

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