Managing Software Requirements: A Unified Approach

Chapter 30. From Requirements to Implementation

Key Points

• Many requirements map well from design to implementation code.

• Other requirements have little correlation to design and implementation; the form of the requirement differs from the form of the design and implementation: the problem of orthogonality.

• Object orientation and use cases can help alleviate the problem of orthogonality.

• Use cases drive design by allowing all stakeholders to examine the proposed system implementation against a backdrop of system uses and requirements.

• Good system design is not necessarily optimized to make it easy to see how the requirements are implemented within the implementation.

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