Chapter 12 Review Questions

1. Chapter 12 Review Questions

2. 12.1 • What are the advantages of separating the analysis and design phases of a project?

3. 12.1 Answer • Staff skills and experience advantage: • having separate business analysts who are more familiar with business practices and designers who know the development environment well. • Project management advantage: • able to plan for and budget for the two stages separately.

4. 12.1 Answer • Choice of development environment: • being able to delay the decision about the development environment to take account of new technologies and changing circumstances. • Client decisions advantage: • having a clear decision point at which the client can read the specification of requirements and agree to it before design begins.

5. 12.3 • Users at Agate require a report of unpaid campaigns. Which of the following aspects of the report represents analysis, logical design and physical design?

6. 12.3 • Analysisis an activity which is a specification of what the proposed system will do based on the requirements. • logical designimplementation-independent • physical design implementation-dependent

7. 12.3 Answer • The size of the paper and the position of each field in the report. • The fact that the user wants a report of completed campaigns that have not yet been paid for by the client. • The selection of the business objects and their attributes used by the report.

8. 12.3 Answer • The fact that the user wants a report of completed campaigns that have not yet been paid for by the client—analysis. • The selection of the business objects and their attributes used by the report—logical design. • The size of the paper and the position of each field in the report—physical design.

9. 12.4 • Which of the following sentences describing an element of the FoodCo system represents analysis, logical design, and physical design? • The reason for stopping a run will be selected from one of the values displayed in a listbox(Java Choice) in the record line stop dialogue window. • When a production line stops during a run, the reason for stopping will be recorded. • The reason for stopping a run will be entered into the system by selecting from a list of valid reasons.

10. 12.4 Answer • The reason for stopping a run will be selected from one of the values displayed in a listbox etc.—physical design. • When a production line stops etc.—analysis. • The reason for stopping a run will be entered into the system etc.—logical design

11. 12.5 • What is meant by seamlessness in object-oriented systems development?

12. 12.5 Answer • Seamlessness means that the same model (class diagram) is used and successively refined throughout the project.

13. 12.6 • What are the differences between system design and detailed design?

14. 12.6 Answer • There are two levels of system design • System Design • Detailed Design

15. 12.6 AnswerSystem Design • During system design, decisions are taken which affect the system as a whole. These are as follows: • Organization standards(screen,report layouts...) • Choosing technologies and frameworks. • Overall Architecture of the system(client-server architecture...)

16. 12.6 AnswerDetailed Design • It concerns with the individual elements, and conforms the standards. • Designing user interfaces, classes, data storage.

17. 12.7 • List quality criteria for good design.

18. 12.7 Answer • Functional, • efficient, • economical, • reliable, • secure, • flexible, • general(includes portability), • buildable, • maintainable, • usable, • reusable.