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computer sciences
systems analysis and design
Systems Analysis and Design 10th edition Shelly Cashman, Harry J. Rosenblatt - Solutions
1. Create a context diagram for the new business. It is OK to use your imagination with respect to data flows that you envision.2. Create a diagram 0 that includes at least three processes and two data stores that would be typical in a small business of this kind. You can use your imagination with
Define an object, and provide three examples.
Define a method, and provide three examples.
Define encapsulation, and explain how it is used in object-oriented analysis.
Define polymorphism, and provide three examples.
Define a class, subclass, and superclass, and provide three examples of each.
Define an actor, and provide three examples.
Define a use case and a use case diagram, and prepare a sample of each.
1. Identify possible actors and use cases involved in Osceola’s business functions.2. Create a use case diagram for Osceola’s operations.3. Select one of the use cases and create a class diagram.4. Create a sequence diagram for the use case you selected.Osceola Auto Parts is an independent auto
1. Identify possible actors and use cases involved in ATA’s bus operations.2. Create a use case diagram for the bus system.3. Create a sequence diagram for the use case you selected.4. Create a state transition diagram that describes typical passenger states and how they changeThe Area Transit
1. List possible objects in the registration system, including their attributes and methods.2. Identify possible use cases and actors.3. Create a use case diagram that shows how students register.4. Create a state transition diagram that describes typical student states and how they change based on
1. List possible objects in the library operation, including their attributes and methods.2. Identify possible use cases and actors.3. Select one of the use cases and create a sequence diagram.4. Create an object relationship diagram that provides an overview of the system, including how books are
1. List possible objects in the new bike shop system, including their attributes and methods.2. Identify at least three possible use cases and actors.3. Create a use case diagram that shows how service requests are handled.4. Create a state transition diagram that describes typical customer states
1. Identify possible actors and use cases involved in Personal Trainer’s operations.2. Create an object relationship diagram for the Personal Trainer information system.3. Create a use case diagram for one of the use cases.4. Select one of the use cases and create a state transition
Describe the concept of software as a service rather than a product. Is this an important trend? Why or why not?
What are three typical reasons why companies develop their own information systems?
What are user applications? Suggest three examples that could boost user productivity.
What are main steps in the software acquisition process?
What is the purpose of a benchmark test? Suggest at least two examples of benchmarks.
What is an evaluation model? How would you create a weighted evaluation model?
Sandy Shores Time Shares is one of the largest time-sharing and rental brokers for vacation cottages along the North Carolina coast. After 10 successful years of matching up owners and renters, Sandy Shores decided to acquire a computerized reservation and booking system. Tim Burns, the owner of
1. What options does Atrium have for acquiring a new system?2. What are the pros and cons of in-house development versus purchasing a system? 3. If the decision is made to purchase a new system, what are three options for customizing the software?4. Based on Part C of the Systems Analyst’s
1. In deciding on your proposal, what options do the owners have?2. If the owners decide to purchase or customize a software package, what steps will you take?3. Explain the difference between logical and physical design.4. Describe the steps typically performed in systems design.Leading Edge
1. Search for information about software outsourcing generally, using the search techniques described in Part D of the Systems Analyst’s Toolkit.2. Visit the Bureau of Labor Statistics site at www.bls.gov and search for information about employment trends affecting systems analysts, computer
1. Prepare a detailed list of pros and cons of in-house versus software purchase.2. Calculate ROI for both options.3. Calculate NPV for both options. Use an 8% discount factor.4. Create a PowerPoint presentation for Mark showing the results of your analysis, including recommendations and
1. What options does Personal Trainer have for developing a new system? What are some specific issues and options that Susan should consider in making a decision?2. Susan has been asked to prepare a system requirements document and deliver a presentation to the management team. What should be the
Suppose your company wants to create a logical model of a proposed information system, and then decide whether to develop the system in-house and purchase a software package. You have been asked to use a CASE tool to construct the model. 1. After you perform fact-finding, you begin to work on the
Provide an overview of the systems design phase.
Describe the habits of successful interface designers.
What are input masks? What are validation rules? Why are they important?
Provide suggestions for reducing input volume.
Describe modular design, and explain the two main prototyping methods.
1. What is a prototype and why is it an important tool for system designers?2. Explain two different ways that Global Earth might use prototypes.3. What are some of the advantages and disadvantages of prototyping?4. In addition to the wind tunnel shown in figure think of at least three other
1. Design a switchboard that includes the main information management functions that Mountain High might need. Create a storyboard with a design layout that allows customers to perform the following functions: Obtain information about new RVs and campers, obtain information about used vehicles,
1. Design a suitable source document for ads that are telephoned or mailed in.2. Explain user-centered design principles in a brief memo to Annie.3. Suggest at least four user interface design guidelines for the new system.4. Suggest several types of controls that might be used on a switchboard you
1. For the prototype user interface, design a switchboard that leads from main sections to subsections of related system tasks. The main sections may include member information, registration, payments, fitness instructors, and any other top-level sections necessary for Personal Trainer’s system.
1. Using the guidelines and suggestions in this chapter, design a user interface. Draw storyboards then use Microsoft Access or another form-designing application to create the screens.2. Determine the data required for a new patient. Design an input source document that will be used to capture the
1. Study the user interface in Visible Analyst or another CASE tool, consider the guidelines described in this chapter, and prepare a detailed recommendation for interface design changes, if any. Be sure to explain your reasons, and the results you hope to achieve.2. Assume that the client agreed
In the auto shop examples on page 348, what are some problems that might arise in Mario’s system? Why won’t Danica run into the same problems? Provide specific examples in your answer.
What is cardinality, and what symbols do you use in the crow’s foot notation method?
What are data warehousing and data mining? How do businesses use these tools?
What is an unnormalized design, and how do you convert an unnormalized design to 1NF? In your answer, refer to specific pages and figures in this chapter.
How would you define second normal form? How do you convert a 1NF design to 2NF? In your answer, refer to specific pages and figures in this chapter.
How would you define third normal form? How do you convert a 2NF design to 3NF?In your answer, refer to specific pages and figures in this chapter.
Suggest three typical business situations where referential integrity avoids data problems. Discuss.
Use Microsoft Access or similar database software to create a DBMS for the imaginary company called TopText Publishing, which is described in Case In Point 9.1 on page 365. Add several sample records to each table and report to the class on your progress.
Visit the bookstore at your school or in your area. Interview the manager or store employees to learn more about the business and the entities that are involved in bookstore operations. Remember that an entity is a person, place, thing, or event that affects an information system. Draw an ERD,
1. Charles asks you, “What is an entity, a table, a field, and a record?” He also wants to know the different between primary key, candidate keys, foreign keys, secondary keys, and combination keys.2. After looking at the ERD you developed, Charles asks you to explain the crow’s foot notation
1. Draw an ERD for the Parrot Palace information system.2. Indicate cardinality.3. Identify all fields you plan to include in the birds and tricks tables. For example, in the bird table, you might want species, size, age, name, and so on. In the tricks table, you might want the trick name and
1. Draw an ERD for the Winfield Public Transit Authority system.2. Indicate cardinality.3. Identify all fields you plan to include in the tables.4. Create 3NF table designs.Winfield is a small city with a population of 22,000. Until now, Winfield was served by a bus route from a nearby city. The
1. Identify the entities and their relationships. Then create an ERD for the reservations system.2. Create 3NF table designs for the system.3. For each of the entities identified, design tables and identify the possible candidate keys, the primary key, a probable foreign key, and potential
1. Create an initial ERD for the new system that contains at least eight entities.2. Analyze each relationship to determine if it is 1:1, 1:M, or M:N.3. Normalize your designs for all tables to ensure they are 3NF, and verify that all primary, secondary, and foreign keys are identified properly.
This chapter begins with an architecture checklist. If you had to rank the items, from most important to least important, what would your list look like? Explain your answer.
Suppose you had a client who never used a network. Explain, in everyday terms, the role of network servers and clients.
Trace the history of system architecture, with particular emphasis on the impact of the personal computer and the Internet. Be sure to include examples.
Is batch processing still relevant? Why or why not?
Define the term topology, and draw a sketch of each wired and wireless network topology.
Explain the main difference between the BSS and ESS wireless topologies. To what kind of wireless topology do the 802.16 standards apply?
E-commerce has seen explosive growth in recent years. What are the most important reasons for this trend? Will it continue? Why or why not?
1. Should Green Design adopt ERP? Why or why not? Provide specific reasons.2. Is the experience of other companies relevant? Use the Internet to locate a software platform that may be useful to Green Design. Give a summary of ERP solutions you find for architectural and engineering firms.3. Should
1. Review the concept of supply chain management. Although Passing Lane offers services rather than products, could the SCM concept apply to the design of the new system? Why or why not?2. What would be the advantages of selecting a Web-based architecture for Passing Lane’s system?3. Since the
1. Should an organization choose a new system based on client/server architecture? Why or why not?2. Explain the pros and cons of thick or thin client characteristics.3. What is the difference between physical and logical topology? Provide examples.4. Will mobile devices replace desktop system
1. Perform research to learn how much consumers are projected to spend on Internet purchases during the next three years, and describe the results. Does the estimate seem reasonable? Why or why not?2. Many of Precision’s clients are start-up firms that must fight hard to attract investment
1. Draw a simple floor plan for New Century Wellness group and include the placement of all network nodes including the placement of a server, and network equipment. How many ports will your switch need to accommodate?2. Given this information, what physical and logical topologies would you
1. Visit the Web site for Visible Analyst® or another CASE tool, and investigate licensing options. Are network installations limited by the number of workstations, the number of users at any one time, or other constraints? Write a brief report with your findings.2. The lab supervisor also told
List and describe the main tasks that are performed during systems implementation.
What is ISO, and why is it important to a systems developer?
What are the most significant differences among structured, object-oriented, and agile methods? What do they have in common?
Define a structure chart in language that a non-IT person would understand easily. Also provide a step-by-step description of how to create a structure chart.
What is cohesion? What is the difference between close coupling and loose coupling?
Describe three main types of testing and the order in which they are performed.
What is Camtasia and why would you use it? What is the Windows Snipping Tool and why would you use it?
What is the difference between an operational environment and a test environment?
List and describe the four main system changeover methods. Which one generally is the least expensive? Which is the safest? Explain your answers.
Why is a post-implementation evaluation important? Who should conduct it, and why?
Your supervisor said that “Integration testing is a waste of time. If each program is tested adequately, integration testing isn’t needed. Instead, we should move on to system testing as soon as possible. If modules don’t interact properly, we’ll handle it then.” Do you agree or disagree
Design a generic post-implementation evaluation form. The form should consist of questions that you could use to evaluate any information system. The form should evaluate the training received and any problems associated with the program.
Create a one-page questionnaire to distribute to users in a post-implementation evaluation of a recent information system project. Include at least 10 questions that cover the important information you want to obtain.
1. Based on what you know about e-commerce, how would you have tested a new Web-based system?2. Should ISO standards have been considered? Explain your answer.3. What should White Diamond do in the future to avoid similar problems when developing new systems?4. Three months after the system
1. What application development methods will you use? Explain your answer. What development tools will help your team finish the business support system and how will you use them?2. Prepare a structure chart that shows the main program functions for the New Century system.3. Develop a testing plan
1. Launch the Visible Analyst® CASE tool, or a similar tool, and then visit the Help section for structure charts. Look for a description of the symbol set, and the definitions for data couples, control couples, and modules. Write a brief summary of what you found, or create a short slide
Describe four types of system maintenance and provide two examples of each type.
As an IT manager, would you assign newly hired systems analysts to maintenance projects? Why or why not?
Define the term what-if analysis. How could you use a spreadsheet in capacity planning?
What is a release methodology? Why is version control important?
Provide an example of technical obsolescence, and explain how it can be a threat to an information system.
What is the most important Information Technology (IT) security issues facing companies today? Have these changed in the last five years, and will they continue to change? How should companies prepare themselves for security threats and problems in the future?
Visit the IT department at your school or at a local company and find out whether performance measurements are used. Write a brief report describing your findings.
Explain how to use the Goal Seek feature in Microsoft Excel, and create a worksheet that demonstrates this feature.
1. Should Paperback Press have a specific process to manage future changes and enhancements? What should it be?2. If new features are added, what methodology should the IT staff use to add functions and enhancements?3. Suppose that you had to assign specific IT staff members to maintain the
1. What should BoB have done to avoid this situation?2. Should the sales support staff ask the IT department to rewrite the user manual as a maintenance project, or should they request more training for sales staff? Can you offer any other suggestions?3. Rewrite the user manual instructions so they
1. Using the Help feature, determine what security features are available in Visible Analyst®, or another CASE tool. Describe what you found in a brief memo, and include screen shots if possible.2. Can Visible Analyst®, or another CASE tool enhance system performance by speeding up access to
What is a corporate culture, and why is it important? Describe the culture ata business where you have been employed.
What techniques can help e-mail communications? Provide specific examples.
Create a one-page document with at least five grammatical errors. Then run the Microsoft Word grammar checker and describe the results.
Why is practice so important when preparing a presentation? Provide a specific example from your own experience.
Most people agree that business e-mail can be more conversational than formal written documents, but even e-mail has its limits. As a manager, what guidance would you give people regarding e-mail style and usage? Discuss.
Is it possible to over communicate? For example, in Chapter 4 you learned to avoid leading questions, which might suggest an answer. Can you think of other examples, like newspaper headlines, where “less is more”?
Explain the concept of an application life cycle management environment and provide two examples of ALMs.
If you were a programmer, would you prefer to work with procedural or non-procedural languages? Explain your reasons.
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