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Other requirements Lecture 7. Other requirements. Use cases ( functional requirements)are not the whole story Supplementary specification (non functional requirements) Glossary : captures terms and definitions Vision : communicate the big ideas

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other requirements lecture 7

Other requirementsLecture 7

CPSC-4360-01, CPSC-5360-01, Lecture 3

other requirements
Otherrequirements
  • Use cases ( functional requirements)are not the whole story
  • Supplementary specification (non functional requirements)
  • Glossary : captures terms and definitions
  • Vision : communicate the big ideas
  • Business rules : rules and policies (ex: tax laws)

CPSC-4360-01, CPSC-5360-01, Lecture 3

slide3
Use cases are a very good way of capturing functional requirements on a system.

But what are non- functional requirements and where are they captured?

Supplementaryspecification

  • Non-functional requirements are often categorized as :
    • Usability-, Reliability, Performance.
    • Need of compliance with any legal and regulatory requirements.
    • Design constraints due to the operating system used, the platform environment, compatibility issues, or any application standards that apply.
supplementary specification
Supplementaryspecification
  • Usability(how easy to use the system)
    • Text should be easily visible from 1 meter
    • Avoid colors ( form of color blindness)
  • Performance
    • Buyer wants to complete sales quickly
  • Licensing : license may be issued by authorities.

POS system :computerized application used to record sales and handle payments

CPSC-4360-01, CPSC-5360-01, Lecture 3

glossary
Glossary
  • Data dictionary recording data about data
  • A simple document of terms and descriptions
  • Should be started early (inception phase)
  • Refined in elaboration phase
  • Reduce problems in communication and ambiguous requirements
  • The term attributes could be :
        • Description
        • Data format ( type , length , unit)
        • Range of values

CPSC-4360-01, CPSC-5360-01, Lecture 3

business rules business system
Business rules- business system
  • How a domain or business may operate
  • Rules (POS System) include:
    • ex : Tax Rules : Sales require added taxes

CPSC-4360-01, CPSC-5360-01, Lecture 3

thank you for your attention questions
Thank you for your attention!Questions?

CPSC-4360-01, CPSC-5360-01, Lecture 3