The reuse-oriented model, also called reuse-oriented development (ROD), is a method of software development in which a program is refined by producing a sequence of prototypes called models, each of which is automatically derived from the preceding one according to a sequence of defined rules.
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The reuse-oriented model can reduce the overall cost of software development compared with more tedious manual methods. It can also save time because each phase of the process builds on the previous phase which has already been refined. When carefully carried out, ROD can minimize the likelihood of errors or bugs making their way into the final product.
The reuse-oriented model is not always practical in its pure form because a full repertoire of reusable components may not be available. In such instances, some new program components must be designed. If not thoughtfully done, ROD can lead to compromises in perceived requirements, resulting in a product that does not fully meet the needs of its intended users.