Requirements Engineering for Software and Systems, 4th Edition

Appendix E: Use Cases

Introduction

Conceptually, requirements are requested system’s features, often described as properties that help a system fulfill its purpose. Requirements are the product of the requirements elicitation process, a central part of requirements engineering (cf. Requirements Engineering: Principles and Practice, p. 949) intended to determine the needs of the system stakeholders. In that context, functional requirements capture the intended behavior of the system in question. This behavior may be expressed as services, tasks, or functions a system is required to perform. Here, one of the most important goals of requirements engineering is to help system stakeholders understand the behavior of the system in question. Among ...