ISOM221+Lecture+5+-+Requirement+Analysis+II

ISOM221+Lecture+5+-+Requirement+Analysis+II - Agenda...

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ISOM221 Information Systems Analysis and Design Lecture 5: Requirement Analysis II 1 Agenda Understand how to gather requirements using interviews, JAD sessions, questionnaires, document analysis, and observation nderstand when to use each requirements Understand when to use each requirements- gathering technique 2 Determining Requirements Techniques available to the systems analyst: Interviews Joint application development (JAD) uestionnaires Questionnaires Document analysis Observation 3 Five Basic Steps of Interviews Selecting interviewees Designing interview questions Preparing for the interview Conducting the interview Post-interview follow-up 4
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Selecting Interviewees Select interviewees based on information needed Often good to get different perspectives anagers Managers Users Ideally, all key stakeholders Create an interview schedule listing all the people who will be interviewed, when, and for what purpose 5 Sample Interview Schedule 6 Designing Interview Questions Three types of interview questions Closed-ended : enable analysts to control the interview and obtain the information they need Open-ended : enable analysts to gather rich information and give the interviewee more control over the information that is revealed Probing : enable analysts to follow up on unclear issues No type of question is better than another A combination of questions is usually used 7 Three Types of Questions 3 - 8
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Designing Interview Questions (cont.) Unstructured interview useful early in information gathering Goal is broad, roughly defined information Structured interview useful later in process oal is very specific information Goal is very specific information Interview questions should be organized into a logical sequence Top-down: start with broad, general issues and gradually work toward more specific ones Bottom-up: start with very specific questions and move to broad questions 9 Interviewing Strategies How can order processing be improved? Top-down High-level: Very general Bottom-up How can we reduce the number of times that customers return ordered items? How can we reduce the number of errors in order processing (e.g., shipping the wrong products)? Medium-level: Moderately specific Low-level: Very specific 10 Preparing for the Interview Prepare general interview plan List of question Anticipated answers and follow-ups Confirm areas of knowledge of the interviewee Set priorities in case of time shortage Prepare the interviewee Schedule Inform of reason for interview Inform of areas of discussion 11 Sample Interview Guide (continued) 12
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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
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This note was uploaded on 12/22/2010 for the course ISOM ISOM221 taught by Professor Sheunhhee during the Spring '09 term at HKUST.

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ISOM221+Lecture+5+-+Requirement+Analysis+II - Agenda...

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