Software Development with Reusable Requirements-Based Cases. Publishing House of the Warsaw Uni

Vast majority of software development projects seem to ignore past knowledge about solving specific problems. This might be explained by significant difficulties to reuse knowledge in such a complex domain as software engineering is. There seem to be no effective mechanisms to find and reuse past solutions to problems similar to the currently solved one. The main question that this book aims at solving is the above inability to reuse knowledge about already solved software development problems. In this book there is proposed a process for systematic reuse of so-called Software Cases. Any Software Case contains a precisely expressed problem statement in the form of a Requirements Model. All elements of this problem statement can be mapped onto appropriate elements of the problem solution. This solution is formed of (again) precisely expressed design models and the final code. Software Cases can be reused on the basis of their similarity to the currently developed system (current Software Case). This similarity can be determined by comparing the current (perhaps yet incomplete) requirements model with requirements models of past Software Cases. The past solution can then be easily reused by modifying it in those places that ar