1. Rekayasa Perangkat Lunak Part-14
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi

2. 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
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi

3. Project
Initiation
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi

4. 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

5. 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
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi

6. 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

7. 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

8. Organizational Feasibility If 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

9. Requirement Gathering Technique
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi

10. 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
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi

11. Interviews Selecting Interviewees Designing Interview Questions
Most commonly used technique
Basic steps:
Selecting Interviewees
Designing Interview Questions
Preparing for the Interview
Conducting the Interview
Post-Interview Follow-up
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi

12. 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
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi

13. Questionnaires Less costly than interviews
Advantages:
Less costly than interviews
Results are less biased due to standardization
Disadvantages
Less effective than interviews due to lack of follow-up
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi

14. 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
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi

15. 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
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi

16. 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
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi

17. 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
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi

18. Requirement Determination
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi

19. Key Definitions
The As-Is system is 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 Proposal is the key deliverable from the Analysis Phase
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi

20. 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
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi

21. Business Process Automation
Goal:
Efficiency
for users
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi

22. Business Process Improvement
Goal:
Efficiency
and
effectiveness
for users
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi

23. Business Process Reengineering
Goal:
Radical redesign of business processes
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi

24. Finished,
Questions?
Rekayasa Perangkat Lunak Copyright © Feb-2009 by Fakultas Teknologi Informasi