Stakeholders, viewpoints and concerns
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Stakeholders, viewpoints and concerns

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Introduces some basic concepts of requirements engineering

Introduces some basic concepts of requirements engineering

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Stakeholders, viewpoints and concerns Stakeholders, viewpoints and concerns Presentation Transcript

  • Stakeholders, viewpoints and concerns Ian Sommerville http://www.youtube.com/watch?v=P5X-ridjaOY Stakeholders, viewpoints and concerns, 2013 Slide 1
  • Stakeholders • Sources of requirements Stakeholders, viewpoints and concerns, 2013 Slide 2
  • Stakeholders • People or roles who are affected, in some way, by a system and so who can contribute requirements or knowledge to help you understand the requirements Stakeholders, viewpoints and concerns, 2013 Slide 3
  • Medical information system Stakeholders, viewpoints and concerns, 2013 Slide 4
  • Medical system stakeholders • Doctors • Nurses • Patients Stakeholders, viewpoints and concerns, 2013 Slide 5
  • Medical system stakeholders • Hospital managers • Administrators • Owners of other connected systems Stakeholders, viewpoints and concerns, 2013 Slide 6
  • Stakeholders, viewpoints and concerns, 2013 Slide 7
  • Stakeholder groups • Clinical stakeholders – – Nurses – • Doctors Other healthcase professionals Management stakeholders – Hospital managers – Administrators Stakeholders, viewpoints and concerns, 2013 Slide 8
  • Viewpoints • Viewpoints are a way of organising and grouping requirements that have been elicited from stakeholders Stakeholders, viewpoints and concerns, 2013 Slide 9
  • Examples of viewpoints • End-user viewpoint • Managerial viewpoint • System administration viewpoint • Engineering viewpoint Stakeholders, viewpoints and concerns, 2013 Slide 10
  • Engineering viewpoint • Engineers who are developing the system create requirements depending on the techniques and technology used to develop the system Stakeholders, viewpoints and concerns, 2013 Slide 11
  • Stakeholders and viewpoints Stakeholde rs Provide information about requirements VP2 VP1 VP3 VP4 Requirements are grouped into viewpoints Stakeholders, viewpoints and concerns, 2013 Slide 12
  • Concerns • Concerns are issues that an organisation must pay attention to and that are systemic i.e. they apply to the system as a whole • Not concerned with individual functions, features of a system or individual stakeholder requirements Stakeholders, viewpoints and concerns, 2013 Slide 13
  • • Concerns are cross-cutting issues that may affect all system stakeholders and the requirements from these stakeholders Stakeholders, viewpoints and concerns, 2013 Slide 14
  • Concerns Software and hardware Operators and managers The organisation Society Security Availability Stakeholders, viewpoints and concerns, 2013 Safety Slide 15
  • The socio-technical triangle Stakeholders are at different levels in the triangle Software and hardware Operators and managers The organisation Society Stakeholders, viewpoints and concerns, 2013 Slide 16
  • • Concerns help bridge the gap between organisational goals (what the organisation has to achieve) and system requirements (how a system contributes to these goals) Stakeholders, viewpoints and concerns, 2013 Slide 17
  • Summary • Stakeholders – People who have an ‘interest’ or a ‘stake’ in the system • Viewpoints – Groups of related requirements from stakeholders • Concerns – Cross-cutting systemic organizational issues that Stakeholders, viewpoints and concerns, 2013 Slide 18 generate requirements