ANALYSIS AND DESIGN

CHAPTER 9

REVIEW QUESTIONS

1.

Logical Modeling Physical Modeling

A non-technical pictorial representation that depicts what a system is or does. (Essential model, conceptual model, business model) A technical pictorial representation that depicts what a system is or does and how the system is implemented. (Implementation model and technical model)
Are constructed to better understand business problem domains and business requirements Implementation dependent because they reflect technology choices and limitations.
Independent of technical implementation

Logical model are more important in systems analysis because:
· Logical models remove biases resulting from current system design or personal vision of new designing.
· Logical models reduce the risk of missing business requirements because of extreme preoccupation with technical matters
· Logical models allow communicating with end users in non-technical or less technical langua...