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computer science
systems analysis and design 12th
Systems Analysis And Design 12th Edition Scott Tilley, Shelly Cashman - Solutions
What are the seven habits of successful interface designers?
Suggest at least two good examples and two bad examples of source document design.
How would you rank the 10 guidelines for user interface design in order of importance? Explain your answer.
Explore the emerging area of wearable computing, such as the Apple Watch, and comment on the impact of these devices on user interface design.
What is output security?
What are three emerging trends in user interface design?
What is a data structure?
In the auto shop examples in Section 9.1.2, 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.
Use Microsoft Access or similar database software to create a DBMS for the imaginary company called Top Text Publishing, which is described in Case in Point 9.1. Add several sample records to each table and report to the class on your progress.
Search the Internet to find information about date formats. Determine whether the date format used in the United States is the most common format.
How do you convert an unnormalized design to 1NF? In your answer, refer to specific pages and figures in this chapter.
How are codes used in data design?
What is data warehousing and data mining?
How would a specific date, such as March 15, 2019, be represented as an absolute date?
How are permissions used to control access to data?
If you had to rank the items in the architecture checklist, from most important to least important, what would your list look like?
What are the three functions that every business information system must carry out, irrespective of system architecture?
What is client/server architecture?
Perform research on the Internet to identify a service provider that offers web-based business solutions, and write a report describing the firm and its services.
What has been the impact of the Internet on system architecture?
What are the main differences between the BSS and ESS wireless topologies?
Briefly describe the components of a DBMS.
Cludadwy Chairs sells a patented seat that spectators can take to youth soccer games. The seat folds so it is small enough to fit in the glove box of most vehicles. The company operates a factory in Kansas and also contracts its manufacturing projects to small firms in Canada and Mexico. An unusual
Explain primary key, candidate key, secondary key, and foreign key.
We use lots of codes in our personal and business lives. How many can you name?
What are ERDs and how are they used?
What is application development?
Discuss the three techniques used to improve QA.
What is QA?
What role do standards play in wireless networking?
What functions do routers, gateways, and proxy servers serve in a network?
What are the advantages of online and batch processing, respectively?
What are the advantages of online and batch processing, respectively?
List the basic tasks in a risk management plan.
Explain Brooks’ law.
What is a system requirement and what are the three challenges it presents to the systems analyst?
Use the requirements gathering techniques of document review, observation, brainstorming, sampling, and research to capture the requirements of a typical elevator control system. Use natural language and the UML to represent the situation where people on different floors push the “Up” button at
Is the requirement “The system shall respond within 2 seconds” a functional or non-functional requirement?
Prepare a presentation summarizing JAD and RAD. Explain how they differ from traditional fact-finding methods. What are the main advantages of team-based methods?
What is scrum?
A group meeting sometimes is suggested as a useful compromise between interviews and questionnaires. In a group meeting, a systems analyst meets with a number of users at one time. Discuss the advantages and disadvantages of group meetings.
Create an FDD similar to the one in Figure 4-15 but showing your school instead of the library example. Library Management Finance & Library Operations Fund Raising Accounting Operations Budgeting Bock Management Personnel Assignment Report Add & Remove Books Checkout & Return Books Archive
Traceability is an important requirements attribute. It’s one of the things that should be checked when performing V&V of the system requirements. Describe how you would manually check traceability for an existing system and list a few features of a CASE tool that you think would help you
A desirable characteristic of a requirement is that it be both consistent and complete. Examine several requirements engineering CASE tools and document how (if at all) they support automated consistency analysis for validating and verifying requirements.
Explain how the observation fact-finding technique works, including the Hawthorne Effect.
What is the relationship between user stories and features in agile projects?
What is an FDD and why would you use one?
What is the difference between validation and verification of system requirements?
Why is traceability important in tool support for requirements engineering?
What is the relationship between logical and physical models?
The data flow symbols shown in Figure 5-1 were designed by Ed Yourdon, who was a well-known IT author, lecturer, and consultant. Many IT professionals consider him to be among the most influential men and women in the software field. Learn more about Mr. Yourdon by visiting online resources and
What is the function of a DFD in the SDLC?
When might it be appropriate to violate the “no crossed lines” guideline in DFDs?
Explore three CASE tools that provide the ability to draw the four basic DFD symbols and describe what you liked and disliked about each tool.
Draw examples of the four basic DFD symbols.
What is the relationship between system requirements and context diagrams?
What are the six guidelines to follow when drawing DFDs?
How might CASE tools be used to document the design of a data dictionary?
Explore the use of Structured English to describe processes in fields other than systems analysis.
Which symbol is not used in a context diagram?
What is a data element?
What is O-O analysis?
You are an IT consultant, and you are asked to create a new system for a small real estate brokerage firm. You have no experience with O-O approach, and you decide to try
Contact the IT staff at your school or at a local business to learn if they use O-O programming languages. If so, determine what languages and versions are used, how long they have been in use, and why they were selected.
Define an object in an information system and provide three examples.
Some professionals believe that it is harder for experienced analysts to learn object-modeling techniques, because the analysts are accustomed to thinking about data and processes as separate entities. Others believe that solid analytical skills are easily transferable and do not see a problem in
Create a presentation explaining O-O analysis, including definitions of basic terms, including objects, attributes, methods, messages, and classes.
Define an attribute and provide three examples.
The concept that the same message gives different meanings to different objects is called polymorphism. Can you think of examples where this behavior may provide unexpected results?
Draw an activity diagram showing the actions and events involved in depositing a check to a bank account using a mobile app.
Define a method and provide three examples.
Define encapsulation and explain how it is used in O-O analysis.
The UML is a large and complex modeling language. How can an IT professional tell when a UML diagram is correct and not just visually pleasing?
Prepare a report on at least three tools that provide UML support. Use the tools’ capabilities for creating class diagrams and sequence diagrams as a key requirement.
Visit the IT department at your school or at a local company, and determine whether the systems were developed in-house or purchased. If packages were acquired, find out what customizing was done, if any. Write a brief memo describing the results.
Select a financial SaaS application, and describe its main features.
How does cloud computing support Web 2.0 applications?
Many financial tools are developed using Microsoft Excel. Identify three applications built using Excel, and describe how they are used in an organization.
Explain the concept of inheritance in object relationships.
Draw an object relationship diagram for a typical library system.
Why is it important to use a modeling tool and not just a diagramming tool during O-O analysis?
List three characteristics each of traditional and web-based development.
What is a structured walk-through?
What are the two main ways project status is reported to management?
Risk analysis is typically a two-step process: qualitative risk analysis and quantitative risk analysis. As a systems analyst, for which sorts of project management decisions would you use the results from qualitative risk analysis? From the quantitative risk analysis?
Consider a scenario where a task is dependent on another task being started but not necessarily completed. For example, a project may depend on a task being started and one-fourth completed before the group could start their portion of the project. Do you think this situation occurs frequently in
Figure 3-27 shows a WBS with 11 tasks. Note that each task has an ID, a description, duration, and a reference to predecessor tasks, if any, which must be completed before the task can begin. Also note that dependent tasks can have one predecessor task or several. Construct a PERT/CPM chart from
If you are managing a large project, would you prefer Gantt charts or PERT/CPM charts to represent project status? Explain why.
Think of all the tasks that you perform when you purchase a car. Include any research, decisions, or financial issues that relate to the purchase. Create a WBS that shows all the tasks, their estimated duration, and any predecessor tasks.
When using a project triangle to illustrate conflicting priorities, Microsoft suggests that if the problem is in the fixed leg, work on the other two legs. For example, if the project must not exceed the budget and it is starting to run over, adjust the schedule, or the scope, or both. However, if
Draw a project triangle that shows the relationship among project cost, scope, and time.
What is information technology, and why is it important to society?
Contact three people at your school who use information systems. List their positions, the information they need, the systems they use, and the business functions they perform.
What are the five main components of an information system?
When team members are geographically dispersed, communication becomes more challenging. Explain how groupware can increase user productivity in this context.
Explain how ridesharing services such as Uber and Lyft are disrupting traditional taxicab business models.
Under what circumstances should a systems analyst recommend an agile methodology over structured development or object-oriented analysis?
Model-based systems engineering (MBSE) is one of the leading methods used by systems analysts to develop information systems. Cameo Systems Modeler is one of the leading tools supporting MBSE. Research magazine articles and the web to learn more about this tool’s capabilities. Identify three of
Describe the business profile of a home improvement store like Home Depot or Lowe’s and how it is used.
Rapid advancements in areas such as machine learning and predictive analytics in data science are affecting the daily operations of many IT departments. What should a systems analyst do to stay current?
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