CHAPTER 6: SYSTEM ANALYSIS AND DESIGN

The process and techniques used by systems analysts to identify or extract system problems and solution requirements from the user community

• Requirements Discovery

• System Requirement

• Ishikawa Diagram

• Venn Diagram

Something that the information system must do or a property that it must have. Also called a business requirement.

• Requirements Discovery

• System Requirement

• Ishikawa Diagram

• Venn Diagram

Graphical tool used to identify, explore, and depict problems and the causes and effects of those problems. It is often referred to as a cause-and-effect diagram or a fishbone diagram.

• Requirements Discovery

• System Requirement

• Ishikawa Diagram

• Venn Diagram

A sampling technique characterized by having no predetermined pattern or plan for selecting sample data.

• Randomization

• Stratification

• Observation

• Work Sampling

A systematic sampling technique that attempts to reduce the variance of the estimates by spreading out the sampling—for example, choosing documents or records by formula—and by avoiding very high or low estimates.

• Randomization

• Stratification

• Observation

• Work Sampling

A fact-finding technique wherein the systems analyst either participates in or watches a person perform activities to learn about the system.

• Randomization

• Stratification

• Observation

• Work Sampling

A fact-finding technique that involves a large number of observations taken at random intervals.

• Randomization

• Stratification

• Observation

• Work Sampling

A special-purpose document that allows the analyst to collect information and opinions from respondents.

• Questionnaire

• Free-format Questionnaire

• Fixed-format Questionnaire

• Survey Questionnaire

A questionnaire designed to offer the respondent greater latitude in the answer. A question is asked, and the respondent records the answer in the space provided after the question.

• Questionnaire

• Free-format Questionnaire

• Fixed-format Questionnaire

• Survey Questionnaire

A questionnaire containing questions that require selecting an answer from predefined available responses.

• Questionnaire

• Free-format Questionnaire

• Fixed-format Questionnaire

• Survey Questionnaire