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computer sciences
systems analysis and design
Systems analysis and design in a changing world 5th edition John W. Satzinger, Robert B. Jackson, Stephen D. Burd - Solutions
What are some examples of physical aspects of the user interface?
What are some examples of conceptual aspects of the user interface?
What are some of the fields that contribute to the field of human-computer interaction?
What two key principles are proposed by Norman to ensure good interaction between a person and a computer?
List the eight golden rules proposed by Shneiderman.
What are three principles of Web design that guide designers?
Think of all of the software you have used. What are some examples of ease of learning conflicting with ease of use?
Visit some Web sites and identify all of the controls used for navigation and input. Are they all obvious? Discuss some differences in visibility and affordance of the controls.
Consider the human factor solution that states it is better to change the machine than to try to change the human to accommodate the machine. Are there machines (or systems) that you use in your daily life that still have room for improvement? Are the current generations of Windows PC and Apple Mac
Read through the following dialog, which shows a user trying to place an order with the system. Critique the dialog in terms of ease of learning and ease of use.User: I want to order a product.System: Okay. Enter your name and address.User: My name is Timothy Mud, 5139 North Center.Street,
Review the sequential design concept and the order centered design concept for the Rocky Mountain Outfitters Create new order dialog. Consider what information and navigation options are not needed by the mail order clerks. Then design the forms that would be appropriate for clerks to use when
Evaluate the online catalog system at your university library (see some of the questions and issues in exercise 2). Write a dialog that shows the interaction between the user and the system. Rewrite the dialog to improve it. Create a storyboard to show how your design would look and feel.
1. Is this dialog a logical or a physical model? Could it be a phone registration system? Could a clerk at a desk handle the dialog manually? Discuss.2. Discuss how well this dialog follows the eight golden rules.3. Complete the dialog by adding likely exchanges between the student and the system
1. Implement the storyboard in this chapter as a prototype using a tool such as Visual Basic.2. Write a dialog, and then create a storyboard for the use case Return rented videos. Consider that one or more videos might be returned and that one or more of them might be late, requiring a late
1. Create a set of menu hierarchies for the system based on the use cases listed. Then add more menu hierarchies for system utilities based on controls, user preferences, and help.2. The most important event listed in the case is Customer calls in to place an order, and the use case might be named
1. Create a set of menu hierarchies for the system based on the use cases in the case. Then add more menu hierarchies for system utilities based on controls, user preferences, and help.2. Write out a dialog between the user and the computer for the use case Record new ticket with a natural sequence
1. Draw a storyboard to show how the one form design concept might look as customer information, product information, and shipping information are added to the expanded form.2. Can you describe or implement yet another alternative?A few of the phone-order representatives at Rocky Mountain
1. Design two separate menu hierarchies, one for Reliable employees and one for nursing home employees.2. Write out the steps of the dialog between the user and the system for the use case Place new order for nursing home employees.3. Create a storyboard for the dialog for Place new order by making
What does XML stand for? Explain how XML is similar to HTML. Also discuss the differences between XML and HTML.
Compare the strengths and weaknesses of using a DFD to define inputs with using a system sequence diagram to define inputs. Which do you like the best? Why?
Explain the system boundary. Why was one used on a DFD but not on a system sequence diagram?
What additional information does the structure chart provide that is not obtained from a DFD in the development of input forms?
How are the data fields identified using the traditional structured approach?
How are the data fields identified using UML and the object oriented approach?
Explain four types of integrity controls for input forms. Which have you seen most frequently? Why are they important?
What protection does transaction logging provide? Should it be included in every system?
What are the different considerations for output screen design and output report design?
What is meant by drill down? Give an example of how you might use it in a report design.
What is the danger from information overload? What solutions can you think of to avoid it?
Describe what kinds of integrity controls you would recommend to place on all output reports. Why?
What are the objectives of integrity controls in information systems? In your own words explain what each of the three objectives means. Give an example of each.
What are the four types of input controls used to reduce input errors? Describe how each works.
Explain what is meant by update controls for a database management system.
What is the basic purpose of transaction logging? Microsoft Access does not have automatic transaction logging. Is this a deficiency, or is it not really an important consideration in database integrity?
On a printed output report, what is the difference between the date the report was printed and the date of the data?
What are the two primary objectives of security controls?
Explain the three categories of user access privileges. Is three the right number or should there be more or fewer than three? Why or why not?
How does single key (symmetric) encryption work? What are its strengths? What are its weaknesses?
How does public key (asymmetric) encryption work? What are its strengths? What are its weaknesses?
What is a digital certificate? What role do certifying authorities play in security systems?
What is a digital signature? What does it tell a user?
The chapter described various situations that emphasized the need for controls. In the first scenario presented a furniture store sells merchandise on credit. Based on the descriptions of controls given in the chapter identify the various controls that should be implemented in the system to ensure
In the second scenario illustrating the need for controls, an accounts payable clerk uses the system to write checks to suppliers. Based on the information in the chapter, what kinds of controls would you implement to ensure that checks are written only to valid suppliers, that checks are written
The executives of a company have asked for a special decision support system report on corporate financials. They want this report to be based on actual financial data for the past several years. The report is to have several input parameters so that the executives can do “what-if” analysis of
A payroll system has a data entry subsystem that is used to enter time card information for hourly employees. What kinds of controls would you implement to ensure that the data is correct and error free? What other controls would you include to ensure that a data entry clerk (who might be a friend
Based on the DFD (Figure) given in Chapter 10, €œThinking Critically€ problem 3, Add class to schedule, and the structure chart you developed there, identify the set of input and output screens for the system. Include the data fields that will berequired.
Based on the DFD (Figure) given in Chapter 10, €œThinking Critically€ problem 5, Special order purchasing, and the structure chart you developed there, identify the set of inputs and outputs required. Develop the list of data fields for each screen andreport.
A university library system is depicted in Figure (a) with partial system sequence diagrams for two use cases, Check out a book and Return a book. Based on the figure construct four tables showing inputs and outputs, as shown in Figures (b) and (c):(1) Inputs for the Library System,(2) Outputs for
You work for a grocery chain that always has many customers in the stores. To facilitate and speed checkout, the company wants to develop self-service checkout stands. Customers can check their own groceries and pay by credit card or cash. How would you design the checkout register and equipment?
Look on the Web for an e-commerce site (for example, Amazon.com or eBay). Evaluate the effectiveness of the screens. What kind of security and controls are integrated into the system? Do you see potential problems with the integrity controls? Evaluate the design of the individual screens. How easy
If your university uses Java, find out about the JS wing class library. Write a one-page description of the JS wing library, its purpose, and ways to use it. Your objective is to demonstrate that you understand the concept of JS wing and the way it is used to build windows and input screens in a
Go to the Internet and find out what you can about Pretty Good Privacy. What is it? How does it work? Research what you can about a passphrase. What does it mean? Here are two sites that you can use to start your research: www.pgpi.org/ and web.mit.edu/network/pgp.html.
Based on the DFD fragments you developed in Chapter 6 and the structure charts from Chapter 10, develop a table of inputs along with the associated data couples and data fields for each input. Also, develop a table of outputs with the required data fields.
Based on the system sequence diagrams you developed in Chapter 7, develop a list of inputs and outputs required for this system. Also, identify any specific controls that may be necessary to ensure that information is entered accurately.
Using the system sequence diagrams you developed in Chapter 7, develop a list of inputs and outputs, along with the necessary data fields, for the system.
1. Identify the data fields that each report should include.2. What questions will users want each report to answer?3. What type of report is it: detailed, summary, or exception?4. How might graphics be used? What about drill-down capabilities?5. How would you prepare a mock-up of each report,
1. Each month, Reliable produces a statement for each nursing home. The statement lists each patient who received prescriptions during the month. All the filled prescriptions are listed. For each prescription, the following information is listed: the price, the amount billed to the patient’s
List and briefly describe the three basic approaches to program development order. What are the advantages and disadvantages of each?
How can the concepts of top-down and bottom-up development order be applied to object oriented software?
Describe three approaches to organizing programming teams. For what types of projects or development activities is each approach best suited?
What is a source code control system? Why is such a system necessary when multiple programmers build a program or system?
Define the terms alpha version, beta version, and production version. Are there well defined criteria for deciding when an alpha version becomes a beta version or a beta version becomes a production version?
List and briefly describe QA activities during implementation other than software testing. What is the effect of not performing such QA activities?
Define the terms acceptance test, integration test, system test, and unit test. In what order are these tests normally performed? Who performs (or evaluates the results of) each type of test?
What is a driver? What is a stub? With what type of test is each most closely associated? With what development order is each most likely to be used?
What factors make testing object-oriented programs more complex than testing structured programs?
List possible sources of data used to initialize a new system database. Briefly describe the tools and methods used to load initial data into the database.
Briefly describe direct, parallel and phased installation. What are the advantages and disadvantages of each installation approach?
What are the differences between documentation for end users and system operators?
How or why is system documentation redundant with the system itself? What are the practical implications of this redundancy?
List the types of documentation needed to support maintenance activities. Which documentation types are needed most frequently? Which are needed least frequently?
How do training activities differ between end users and system operators?
How does implementing a maintenance change differ from developing a new system? How are they similar?
Why might system software upgrades not be installed? What are the costs of not installing them?
Examine the system flowchart for Rocky Mountain Outfitters in Figure. Develop a preliminary development plan based on IPO development order. Which programs are difficult to classify as input, process, or output? Is a straightforward application of IPO development order appropriate for this system?
Describe the process of testing software developed using both top-down and bottom-up development order. Which method results in the fewest resources required for testing? What types of errors are likely to be discovered earliest under each development order? Which development order is best as
Assume that the Rocky Mountain Outfitters’ customer support system will be developed as described in your answer to question 1. Assume that 14 people are available for programming and testing. What sizes and types of teams are best suited to the project?
Consider the issue of documenting a system using only electronic models developed with a full life-cycle development tool. The advantages are obvious (for example, the analyst modifies the models to reflect new requirements and automatically generates an updated system). Are there any disadvantages?
Some types of system documentation (such as models developed during analysis activities) are seldom looked at after the system is made operational. What are the advantages and disadvantages of not keeping such documentation types?
Assume that you and five of your classmates are charged with developing the Customer order program shown in Figure. Create a development and testing plan to write and test the required modules. Assume that you have three weeks to complete alltasks.
Implement a formal QA process in one of your programming or system development classes (be sure to obtain permission from your instructor first). Form a group of students to implement an inspection process. Have one or all members prepare presentation materials for code that they’ve written and
Examine the end-user documentation supplied with a typical personal or office productivity package such as Microsoft Office. Compare the documentation to the categories described in this chapter. Which categories of documentation are supplied? How might documentation for a business application
Talk with an end user at your school or work about the documentation and training provided with a recently installed or distributed business application. What types of training and documentation were provided? Did the user consider the training to be sufficient? Does the user consider the
1. What type of installation did Hudson Banc use for its new system? Was it an appropriate choice?2. How could the operational problems have been avoided?Two regional banks with similar geographic territories merged to form Hudson Banc. Both banks had credit-card operations and operated billing
Using the design class diagram you developed in Chapter 12 for the Down Town Videos rental system, develop an implementation and testing plan. Specify the order in which classes and their methods will be implemented and the groups of methods and classes that will be tested during integration
1. Describe the risks associated with planning the new CSS implementation and announcing the new Web ordering system to customers. Remember that the new CSS will replace the current telephone, mail-order, and Web order systems. How conservative should RMO be with respect to testing, installation,
Using the structure chart you developed in Chapter 10 for Reliable Pharmaceutical Service, develop an implementation and testing plan. Specify the order in which modules will be implemented and the groups of modules that will be tested during integration testing.
Identify the five important principles and practices that are driving many of the current trends in software development. Briefly explain each.
Explain the difference between a predictive control process and an empirical control process.
List the six fundamental characteristics of adaptive projects.
What are the elements of the “Manifesto for Agile Software Development”? Explain what each means.
What does chaordic mean? What implications does it have for development projects?
What are the four UP phases and what is the objective of each?
List the basic principles of Agile Modeling.
List the core values of XP.
List the XP practices.
What is the product backlog used for in a Scrum project?
Explain how a Scrum sprint works.
Explain the difference in project time management and project scope management for projects using agile methods.
What is a PIM? What is a PSM? How are they related?
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