Requirement Elicitation

Question 1

Requirements Elicitation

Answer 1

The process of seeking, capturing and consolidating requirements from available requirements sources

Question 2

3 Requirement Sources

Answer 2

1. Stakeholders
2. Documents
3. Systems in Operation

Question 3

Stakeholders

Answer 3

People or organizations that (directly or indirectly) influence the requirements of a system. Exam ples of stakeholders are users of the system, operators of the system, developers, architects, customers, and testers.

Question 4

Documents

Answer 4

Standards and legal documents, as well as domain- or organization specific documents, such as requirements documents and error reports of legacy systems.

Question 5

Requirements Categorization According to Kano Model

Answer 5

1. Dissatisfier (a must-be requirements)
2. Satisfiers (a one-dimensional customer requirement)
3. Delighters (an attractive requirement)

Question 6

Dissatisfiers (Basic Factors)

Answer 6

Properties of the system that are self-evident and taken for granted (subconscious knowledge).

• must be fulfilled by the system in any case
• observation (Field observation, Apprenticing) and document-centric (system archeology, perspective-based reading) techniques are well suited for this

Question 7

Satisfiers (Performance Factors)

Answer 7

Explicitly demanded system properties (conscious knowledge)

• Satisfiers can be well using survey techniques (interview, questionnaire).

Question 8

Delighters (Excitement Factors)

Answer 8

System properties that the stakeholder does not know or expect and discovers only while using the system—a pleasant and useful surprise (unconscious knowledge)

• Creativity techniques are best suited to elicit delighters (Establishing innovations, Brainstorming, change of perspective, analogy technique)

Question 9

Elicitation Techniques

Answer 9

(SCODS)
1. Survey Techniques
2. Creativity Techniques
3. Observation Techniques
4. Document-centric Techniques
5. Supporting Techniques

Question 10

Survey Techniques

Answer 10

1. Interview
2. Questionnaire

Question 11

Creativity Techniques

Answer 11

1. Brainstorming
2. Change of Perspective (etg; six thinking hats)
3. Analogy

Question 12

Observation Techniques

Answer 12

1. Field Observation (Observation of the users at work)
2. Apprenticing (executing the work of the user under their guidance)

Question 13

Document-centric Techniques

Answer 13

1. System Archeology - exploration of functionality of an existing system
2. Perspective-based reading
3. Reuse

Question 14

Supporting Techniques

Answer 14

1. Workshops
2. Prototyping
   a) Throw-away prototyping
   b) Evolutionary prototyping