Systems Analysis And Design 3rd Edition Alan Dennis, Barbara Wixom, David Tegarden - Solutions

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6. Consider the Amazon.com website. The manage- ment of the company decided to extend its web- based system to include products other than books (e.g., wine, specialty gifts). How would you have assessed the feasibility of this venture when the idea first came up? How "risky" would you have con-
5. Suppose that you are interested in buying yourself a new computer. Create a cost-benefit analysis that illustrates the return on investment that you would receive from making this purchase. Computer-related websites (www.dell.com, www.hp.com) should reveal real tangible costs that you can
4. Car dealers have realized how profitable it can be to sell automobiles by using the web. Pretend that you work for a local car dealership that is part of a large chain such as CarMax. Create a system request that you might use to develop a web-based sales system. Remember to list special issues
3. Locate a news article in an IT trade magazine (e.g.. Computerworld) about an organization that is implementing a new computer system. Describe the tangible and intangible values that the organization likely will realize from the new system.
2. Think about your ideal analyst position. Write a newspaper ad to hire someone for that position. What requirements would the job have? What skills and experience would be required? How would appli- cants demonstrate that they have the appropriate skills and experience?
1. Look in the classified section of your local newspa- per. What kinds of job opportunities are available for people who want analyst positions? Compare and contrast the skills that the ads solicit with the skills that were presented in this chapter.
30. What is stakeholder analysis? Discuss three stake- holders that would be relevant for most projects.
29. What is the break-even point for the project? How is it calculated?
28. Explain the net present value and return on invest- ment for a cost-benefit analysis. Why would these calculations be used?
27. Explain how an expected value can be calculated for a cost or benefit. When would this be done?
26. List two tangible benefits and two operational costs for a system. How would you determine the values that should be assigned to each item?
25. List two intangible benefits. Describe how these benefits can be quantified.
24. What are the steps for assessing economic feasibility? Describe each step.
23. Describe a "risky" project in terms of technical feasibility. Describe a project that would not be considered risky.
22. What factors are used to determine project size?
21. Describe the three dimensions of feasibility analysis.
20. How are they used in the project selection process? to list on a system request.
19. What are the purposes of the system request and the feasibility analysis?
18. What is the difference between intangible value and tangible value? Give three examples of each.
17. Why should the system request be created by a businessperson as opposed to an IS professional?
16. What is the purpose of an approval committee? Who is usually on this committee?
15. Describe the roles of the project sponsor and the approval committee.
14. Give three examples of business needs for a system.
13. Compare and contrast BPA, BPI, and BPR. Which is most risky? Which has the greatest potential value?
12. Describe the four steps of business process man- agement. Why do companies adopt BPM as a management strategy?
11. What does gradual refinement mean in the context of SDLC?
10. Which phase in the SDLC is the most important?
9. Describe the principal steps in the implementation phase. What are the major deliverables?
8. Describe the principal steps in the design phase. 20. Describe two special issues that may be important What are the major deliverables?
7. Describe the principal steps in the analysis phase. What are the major deliverables?
6. Describe the principal steps in the planning phase. What are the major deliverables?
5. Describe the major phases in the systems develop- ment life cycle (SDLC).
4. Compare and contrast phases, steps, techniques, and deliverables.
3. Compare and contrast the role of a systems analyst, business analyst, and infrastructure analyst.
2. What are the major roles on a project team?
1. What are the six general skills all project team members should have?
29. What do you think are three common mistakes that novice analysts make in using UML techniques?
28. Identify the model(s) that contains each of the fol¬lowing components:Aggregation association Class Derived attributes Extends association
27. Describe the way in which the RUP is implemented on a systems project.
26. Compare and contrast the rational unified process(RUP) with UML.
24. What three kinds of events can lead to state transi¬tions on a behavioral state machine diagram?
23. Are states always depicted using rounded rectangles on a behavioral state machine diagram? Explain.
20. What are the two kinds of labels that a class dia¬gram can have for each association? When is each kind of label used?
19. Draw the associations that are described by the fol¬lowing business rules. Include the multiplicities for each relationship.A patient must be assigned to only one doctor and a doctor can have one or many patients.An employee has one phone extension, and a unique phone extension is assigned to
18. Identify the following operations as constructor, query, or update. Which operations would not need to be shown in the class rectangle?
17. Give three examples of derived attributes that may exist on a class diagram. How would they be denoted on the model?
16. How is a class diagram different from an ERD?
15. Describe the steps used to create a sequence diagram.
14. Do lifelines always continue down the entire page of a sequence diagram? Explain.
13. Describe the main building blocks for the sequence diagram and how they are represented on the model.
12. Give examples of a static model and a dynamic model in UML. How are the two kinds of models different?
10. Which ofthe following could be an actor found on a use case diagram? Why?
6. Describe the steps in creating a use case diagram.
5. What is Unified Modeling Language (UML)? How does it support the object approach to systems development?
4. Describe how the object approach supports the pro¬gram design concepts of cohesion and coupling that were presented in Chapter 11.
1. Contrast the items in the following sets ofterms:Object; class; instance; entity relationship dia¬gram (ERD) entity Property; method; attribute State; behavior
24. Suppose you are the project manager for a new library system for your university. The system will improve the way in which students, faculty, and staff can search for books by enabling them to search over the Web, rather than using only the cur¬rent text-based system available on the computer
22. In our experience, change management planning often receives less attention than conversion plan¬ning. Why do you think this happens?change in terms of both the change and the transi¬tion to the change.
21. Some experts argue that change management is more important than any other part of the SDLC.Do you agree or not? Explain.
20. What do you think are three common mistakes that novice analysts make in migrating from the as-is to the to-be system?
19. How is project team review different from system review?
18. Why is project assessment important?
17. What are the major sources of change requests?
16. How is a problem report different from a change request?
15. Compare and contrast two major ways to provide system support.
14. What is the role ofthe operations group in the sys¬tems development life cycle (SDLC)?
13. Compare and contrast three basic approaches to training.
27. How should you decide what items to include in your training plan?
26. Consider a major change you have experienced in your life (e.g., taking a new job, starting a new school). Prepare a cost-benefit analysis of the
21. Some experts argue that change management is more important than any other part of the SDLC.Do you agree or not? Explain.
20. What do you think are three common mistakes that novice analysts make in migrating from the as-is to the to-be system?
19. How is project team review different from system review?
18. Why is project assessment important?
17. What are the major sources of change requests?
16. How is a problem report different from a change request?
15. Compare and contrast two major ways to provide system support.
14. What is the role ofthe operations group in the sys¬tems development life cycle (SDLC)?
13. Compare and contrast three basic approaches to training.
12. How should you decide what items to include in your training plan?
11. Explain the three categories ofadopters you are likely to encounter in any change management initiative.
4. Compare and contrast pilot conversion, phased con¬version, and simultaneous bonversion.
2. What are the major components of a migration plan?
4. If commercial systems contain the amount of bugs that this article suggests, what are the implications for sys¬tems developed in-house? Would in-house systems be more likely to have a lower or higher quality than com¬mercial systems? Explain.
3. Target could be considered a high-risk system because of its effects on the European economy. What kinds of system support activities could be put in place to miti¬gate problems with Target?
2. How might this be addressed?
1. What is another possible explanation for the different levels of resistance encountered at different mills?
1. Do you think the conversion strategy was appropriate?2. Regardless of whether you agree, what other conver¬sion strategy could have been used?
33. Implementing Target was a major undertaking for a num¬ber of reasons. If you were an analyst on the project, what kinds of issues would you have to address to make sure the conversion happened successfully?
33. Compare and contrast the online help at two differ¬ent Web sites that enables you to perform the same function (e.g., make travel reservations, order books).
32. Examine and prepare a report on the online help sys¬tem for the calculator program in Windows (or a similar program for the Mac or Unix). (You may be surprised at the amount of help for such a simple program).
29. Develop a unit test plan for the calculator program in Windows (or a similar program for the Mac or UNIX).
28. Develop several guidelines to use to develop good documentation. Hint: think about behaviors that might lead to developing poor documentation.
25. What do you think are three common mistakes made by novice systems analysts in preparing user documentation?
24. What do you think are three common mistakes made by novice systems analysts during program¬ming and testing?
23. What are the commonly used sources of documen¬tation navigation controls? Which is the most important? Why?
22. What are the commonly used sources of documen¬tation topics? Which is the most important? Why?
20. Distinguish between these types of user documen¬tation: reference documents, procedures manuals, and tutorials.
15. Discuss the role users play in testing.
9. What is the primary goal of integration testing?
8. How are test cases developed for unit tests?

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