1. Requirements Analysis Dr. Merle P. Martin CSU Sacramento

2. Agenda t Goals t Methods t Interviewing t Questionnaires t Observation t Requirements Analysis Document

3. Requirements Analysis Goals t Fully describe current system t Determine ideal information system t Identify resource constraints t Inspire user confidence / ownership t Figure 7-6, page 246

4. Requirements Analysis Methods t Checklists pp. 228-233 u Interviews u Questionnaires u Observation u Procedure Analysis u Document Survey

5. Methods ( continued ) t How method used t Target for method ( DFD ) t Advantages t Disadvantages t When method best used

6. Interviewing Questions t Who should interview? t Should we take notes? t How many interviewers? t Structured or unstructured questions? t How long should interview last?

7. Interviewing Tips t Watch the time t Don’t look at watch t No leading questions t Listen t No body language

8. Interviewing Tips ( continued ) t Make user feel important t Be courteous / professional t Don’t take exhaustive notes t Use structured questions t Don’t ask users to remember details u use observation instead t Avoid gang interviews

9. Questionnaires t Response Rate u % returned u questionnaire length u make first part interesting v place demographics at end u closed questions t Figure 7-5, page 240

10. Observation t Not for long periods of time u will change what you’re measuring t Vary observation periods t Take only minimal, pre-planned notes t Coordinate visit beforehand t Beware of Selective Perception !

11. Requirements Analysis Document t Parts u How analysis conducted v credibility v restarts u User Requirements u System Constraints u Realistic System Objectives u Documentation ( appendix )

12. User Requirements t User system objectives ( unedited) t Reports ( type / frequency ) t User training needs t Effect of new system on various users u Organization Chart

13. System Constraints t Time t Skills t Funds t Technology t External factors

14. Documentation t Data collection instruments t DFDs t Other

15. Concepts to Remember t Requirements Analysis goals t Methods ( checklists ) t Interviews t Questionnaires t Observation t Requirements Analysis Document