REQE Introduction

Intro

• What is a requirement ?
• "A condition or capability that must be met or possessed by a system or system component satisfy a contract, standard, specification, or other formally imposed document. The set of all requirements forms the basis for subsequent development of the system or system component"
• Requirements can be : things a system must do, qualities a system must have, constraints that a system must satisfy.

• What is requirements engineering ?
• Requirements engineering is the branch of software engineering concerned with the real-world goals for, functions of, and constraints on software systems. It is also concerned with the relationship of these factors to precise specifications of software behaviour, and to their evolution over time and across software families.
• Preciseness is the key to validation and verification.