1 Introduction.- Objectives.- 1.1 Introduction.- 1.2 Why is a Requirements Stage Necessary.- 1.3 What is a Requirement.- 1.4 Requirements Engineering.- 1.5 The Requirements Engineering Process.- 1.6 The Requirements Engineer.- 1.7 Approaches to the Problem of Requirements.- 1.8 Rationale for this Book.- 1.9 Summary.- 2 The Role of Requirements Engineering Techniques.- Objectives.- 2.1 Introduction.- 2.2 The Requirements Engineering Process.- 2.3 Human...