Rekayasa Perangkat Lunak

1. Rekayasa Perangkat Lunak

2. Bagian 14 REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14 2

3. Outline of this presentation Project Initiation System Request Feasibility Analysis Requirement Gathering Technique Interviewing & Listening Questionnaire Observation Document Analysis Requirement Determination Key Definition Basic Process of Analysis FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

4. Project Initiation FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

5. System Request A document describing business reasons for project and system’s expected value. Lists project’s key elements Project sponsor Business need Business requirements Business value Special issues or constraints FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

6. Feasibility Analysis Detailed business case for the project Technical feasibility Economic feasibility Organizational feasibility Compiled into a feasibility study Feasibility is reassessed throughout the project FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

7. Technical Feasibility: Can We Build It? Users’ and analysts’ familiarity with the business application area Familiarity with technology Have we used it before? How new is it? Project size Number of people, time, and features Compatibility with existing systems FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

8. Economic Feasibility: Cost ? Do we have it ? Where the money come from? How do we manage the Cash Flow Project size Number of people, time, and features Compatibility with existing systems FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

9. Organizational FeasibilityIf we build it, will they come? Strategic alignment How well do the project goals align with business objectives? Stakeholder analysis Project champion(s) Organizational management System users FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

10. Requirement Gathering Technique FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

11. Interviewing and Listening Means to gather information about a project Listening to answers is just as important as asking questions Effective listening leads to understanding of problem and generates additional questions FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

12. Interviews Most commonly used technique Basic steps: Selecting Interviewees Designing Interview Questions Preparing for the Interview Conducting the Interview Post-Interview Follow-up FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

13. Conducting the Interview Appear professional and unbiased Record all information Check on organizational policy regarding tape recording Be sure you understand all issues and terms Separate facts from opinions Give interviewee time to ask questions Be sure to thank the interviewee End on time FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

14. Questionnaires Advantages: Less costly than interviews Results are less biased due to standardization Disadvantages Less effective than interviews due to lack of follow-up FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

15. Questionnaire A set of written questions, often sent to a large number of people May be paper-based or electronic Select participants using samples of the population Design the questions for clarity and ease of analysis Administer the questionnaire and take steps to get a good response rate Questionnaire follow-up report FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

16. Good Questionnaire Design • Begin with non-threatening and interesting questions • Group items into logically coherent sections • Do not put important items at the very end of the • questionnaire • Do not crowd a page with too many items • Avoid abbreviations • Avoid biased or suggestive items or terms • Number questions to avoid confusion • Pretest the questionnaire to identify confusing • questions • Provide anonymity to respondents FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

17. Observation Watch processes being performed Users/managers often don’t accurately recall everything they do Checks validity of information gathered other ways Be aware that behaviors change when people are watched Be unobtrusive Identify peak and lull periods FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

18. Document Analysis Study of existing material describing the current system Forms, reports, policy manuals, organization charts describe the formal system Look for the informal system in user additions to forms/report and unused form/report elements User changes to existing forms/reports or non-use of existing forms/reports suggest the system needs modification FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

19. Requirement Determination FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

20. Key Definitions The As-Is systemis the current system and may or may not be computerized The To-Be system is the new system that is based on updated requirements The System Proposalis the key deliverable from the Analysis Phase FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

21. Basic Process of Analysis Understand the “As-Is” system Identify improvement opportunities Develop the “To-Be” system concept Techniques vary in amount of change BPA – small change BPI – moderate change BPR – significant change Additional information gathering techniques are needed as well FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

22. Business Process Automation Goal: Efficiency for users FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

23. Business Process Improvement Goal: Efficiency and effectiveness for users FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

24. Business Process Reengineering Goal: Radical redesign of business processes FAKULTAS TEKNOLOGI INFORMASI REKAYASA PERANGKAT LUNAK – KP146 – 3 SKS – BAG 14

25. Finished, Questions?