LetsGrow Non-functional requirements
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LetsGrow Non-functional requirements

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    LetsGrow Non-functional requirements LetsGrow Non-functional requirements Presentation Transcript

    • Non-functional requirements
      June 24, 2009
      (Patrick Kalkman, Robert-Jan Kuijvenhoven)
    • 2
      Agenda
      • Intention of the meeting
      • Introduction
      • Workshop
      • Workshop Result
      • ISO 9126 / QUINT
      • Conclusion
      Non-Functional Requirements
      24/06/2009
    • 3
      Intention of this meeting
      Sharing knowledge about Non-functional requirements
      Determine if Non-functional requirements need more attention
      Non-Functional Requirements
      24/06/2009
    • Introduction
      4
      • What are Non-functional requirements
      “Functional requirements define WHAT a system is supposed to do”
      “Non-Functional requirements define HOW a system is supposed tobe”
      “Non-functional requirements are often called qualities of a system”
      Non-Functional Requirements
      24/06/2009
    • 5
      Non-Functional Requirements
      Introduction
      Non-functional requirements are:
      • Often implicit!
      • Often unclear!
      • Just as important as functional requirements?
      • Or are functional Requirements “Must Haves” and Non-functional Requirements “Nice to Have”?
      24/06/2009
    • 6
      Non-Functional Requirements
      Non-functional Requirements?
      Who knows a Non-functional requirements?
      24/06/2009
    • 7
      Non-Functional Requirements
      Non-Functional Requirements?
      Can Non-functional requirements conflict and interact with other Non-functional requirements?
      Who knows examples of these conflicts?
      24/06/2009
    • 8
      Non-Functional Requirements
      Workshop Non-Functional Requirements
      Determine the 3 most important Non-functional requirements for Project X.
      Write result on flip-over
      Which Non-functionals?
      Rationale?
      Proces?
      Time: 30 minutes
      24/06/2009
    • 9
      Workshop Non-Functional Requirements Divide into groups
      Group1:
      • Person 1
      • Person 2
      • Person 3
      Group2:
      • Person 1
      • Person 2
      • Person 3
      Group4:
      • Person 1
      • Person 2
      • Person 3
      Group3:
      • Person 1
      • Person 2
      • Person 3
      Non-Functional Requirements
      24/06/2009
    • 10
      Non-Functional Requirements
      Workshop Results
      Each group presents
      Which Non-functionals?
      Rationale?
      Proces?
      24/06/2009
    • 11
      Non-Functional Requirements
      Recent projects without focus on Non-functionals
      • Project 1 / (Degradability)
      • Project 2 / (Performance)
      • Project 3/ (Performance)
      • Project 4 / (User friendly)
      • Project 5 / (Performance)
      • Project 6 / (Testability)
      24/06/2009
    • 12
      Non-Functional Requirements
      ISO 9126 / QUINT
      24/06/2009
    • 13
      Non-Functional Requirements
      Recap Non-functional requirements
      • Now familiar with non-functional requirements
      • Can be determined efficiently through a workshop
      • QUINT can give checklist with possible non-Functionals
      • QUINT also shows how to measure non-Functional
      24/06/2009
    • 14
      Non-Functional Requirements
      Conclusion
      Should we focus more on Non-functional requirements?
      24/06/2009
    • 15
      Non-Functional Requirements
      Questions?
      24/06/2009
    • 16
      Non-Functional Requirements
      We have a question for you?
      What is most important Non-functional requirement of your current project?
      24/06/2009