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3 .Introduction to software requirements (Amazon case (System requirements…

- - - - Expetations
      - Preferences
      - Aversions
  - - - done before project implementation
      - Concers
        
        Technical
        
        Economic
        
        Legal
        
        Operational
        
        Scheduling
- - - - High level
      - expressed via use cases, scenarios
    - - decompose from feature
      - code
      - low level
  - - - external to the product and the development process
    - - Use to evaluate overall performance of the system
      - can be internal or external
        
        functionability
        
        reliability
        
        usability
        
        efficiency
        
        maintainability
        
        portability
      - affects overall architecture vs detail design
    - - Restriction on the degree of freedom you have in providing a solution
- - - - Availability
      - Efficiency
      - Flexibility
      - integrity
      - interoperability
      - Reliability
      - Robustness
      - usability
    - - Maintainability
      - portability
      - reusability
      - testable