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Understanding

Understanding. Ebba Thora Hvannberg. Goal. Understand what requirements are Know methods to elicit requirements Be able to understand these requirements. What are requirements ?.

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Understanding

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  1. Understanding Ebba ThoraHvannberg

  2. Goal • Understandwhatrequirementsare • Knowmethodstoelicitrequirements • Beabletounderstandtheserequirements

  3. Whatarerequirements? • A requirement is ‘ something the product must do or a quality that the product must have’ (Robertson and Robertson, 1999). • Requirementsarebothfunctional and non-functional

  4. Priority of requirements (MoSCoW) • Must have– • Must absolutelyhave • Shouldhave– • Wouldbe fundamental if enoughtime • Couldhave • Canomit • WanttohavebutWon’thavethistimeround – canwaituntillater

  5. Interviews – waystoelicitrequirements • Structuredinterviews – questionsdecideduponbeforehand • Semi-structureinterviews

  6. Supportmaterial for interviews • Storyboards • Scenarios

  7. Interviews • Beprepared and get toknowthedomain • Tryto get helpfromotherswhocantake notes • Beaware of an incorrectview of thereality • Repeatsttements and iteratemorecloselyto get details

  8. Generalquestions: • Tell me about a typicalday • Tell me aboutthreegoodthings and threebadthings • Be an apprentice • Whento stop • 2-3 interviewees per role • When no newrequirementsarefound

  9. Questionnaires • Youwillreachmorepeople • Timeconsuming and difficulttocreate • Responserationcanbelow

  10. Questionnaires

  11. In situ • Observepeoplewhiletheywork in theirownenvironment • Canbedifficulttoputoneself in people’ssituations in an interviewroom. • Becareful not todisturb. Be a flyonthewall. • Theexperience is strong and henceyoucannotderive at toogeneralassumptions. • Checkwhatyou do not see

  12. Data gathering

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