This course focuses on the good requirements-engineering practices that are essential if complex systems are to be developed to meet users' expectations without being delivered late and over-budget. The course provides a broad overview of all aspects of requirements engineering, without focusing on any particular detailed technique or tool (although the requirements for those approaches and applications are clearly identified). The major content of the course includes requirements elicitation/generation, requirements analysis and negotiation, requirements allocation, requirements validation, and requirements maintenance/management. The course has a strong practical element, both in terms of the introduction to the topic as well as formal practice through a major exercise.