Understanding

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

7. Supportmaterial for interviews • Storyboards • Scenarios

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

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

10. Questionnaires • Youwillreachmorepeople • Timeconsuming and difficulttocreate • Responserationcanbelow

11. Questionnaires

12. 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

13. Data gathering