31269 Lecture Notes - Lecture 3: Leading Question, Statistical Significance, Requirements Elicitation
Week 3 Lecture: Requirements Elicitation
Requirements Elicitation Process
• The following activities could be included in any requirements elicitation
process:
o Understanding the application domain and the properties of the
existing system.
o Identifying the sources of requirements
o Identifying and analysing all the relevant stakeholders
o Selecting the approaches, techniques and tools for elicitation
o Eliciting the requirements from the stakeholders and other sources
using the selected techniques, approaches and tools.
• For the elicitation process, a business analyst needs to get a clear
understanding of the overall objectives of the enterprise, as well as what
individual users of the system want to achieve.
• They must also understand how the business is operating presently, and how
people work right now, as well as what they currently cannot do with the
existing system.
• The motivation for the development of a new information system is usually
problems with and inadequacies of the current system. Requirements which
arise from inadequacies of current systems help shape future systems,
producing new requirements.
Elicitation Techniques
Interview
• An interview is a systematic approach to elicit information from a person or
group of people in either a formal or informal setting, by talking to an
interviewee, asking relevant questions and then documenting responses.
• One on one interviews are more common. In a group interview, the
interviewer has to be careful to elicit responses from everyone, not just the
few vocal members.
• The interview technique is the most widely used, however it requires the
most skill and sensitivity. It needs good planning, good interpersonal skills
and an alert and responsive frame of mind in order to alter the train of
questioning if necessary.
• A key goal of interviewing is to ensure that biases and predispositions of the
interviewer to not interfere in the process.
• There are two types of interview
o Structure – predefined set of questions
o Unstructured – discuss topics or interest in an open ended manner.
• During the interview, it is important to probe for details by using different
types of questions, and avoid blaming or forcing your opinion upon the
interviewees.
• There are several different types of questions:
o Open – general questions to establish a viewpoint and develop
rapport.
o Closed – questions that can be answered with a single word or short
phrase. Used to obtain facts and specific pieces of information.
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