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computer science
systems analysis and design 12th

Questions and Answers of Systems Analysis And Design 12th

Given a lamp with a radiant intensity of \(0.1 \mathrm{~W} / \mathrm{sr}\) illuminating a Lambertian diffuser \(10 \mathrm{~cm}\) away with a \(1 \mathrm{~cm}\) diameter aperture located just beyond
Suppose that we have a source of height \(h_{1}\) in medium of index \(n_{2}\), creating an image by a simple lens that has the height \(h_{2}\) in medium of index \(n_{2}\). Prove Abbe's Sine
What kind of knowledge and skills should a system analyst possess?
Why are good interpersonal communication skills essential for system analysts?
What are the differences between electronic commerce (e-commerce) and electronic business (e-business)?
Your company president sits down beside you just before a meeting is to begin and tells you that people keep saying the customer needs to install a CRM, but doesn't really know what it is The company
Search the Web for several articles and information on ethical issues related to information technology professionals.a. What articles did you find?b. Based on your research, which ethical issues do
What is the difference between front-office Information systems and back-office information systems?
How do transaction processing systems (TPSs), management information systems (MISs), and decision support systems (DSSs) interact with each other?
Why do we need to identify the information system architecture?
What are the three business goal-oriented perspectives or views of an information system that systems owners and system users tend to focus on? What are the three technological perspectives that
How are the business perspectives and the technology perspectives of an information system related?
In any given building blocks of in information system, the views of four groups of stakeholders need to be taken into account during the development of the system. What are these four stakeholder
Briefly describe how system designers and system builders tend to view KNOWLEDGE in a system.
Understanding business functions is essential in the process building block of an information system. What are six high-level business functions typical of many companies?
If you were the system owner of an online CD store, list two business functions of your online store in terms of business events and responses to those events.
Give an example of a policy and the procedures needed to implement the policy.
What is prototyping? Why do we need such a technique?
What are the two most critical goals in the communication building blocks?
What is user dialogue?
Why has the increasing use of graphical user interfaces (GUI) complicated the design process for system designers?
What role does network technology play in developing an information system?
Companies generally need to use more than one information system to support all their different business functions. These functions are frequently referred to as either front-office information
As a systems analyst, designer, or builder, you will frequently be involved with your organization's information systems architecture. What is an information systems architecture, and what is its
Although system owners and system users generally have different perspectives of their organization's information system, both groups rend to focus on three business goals that are common to any
In an information system, the process building blocks represent the work that occurs in a system, which may be performed by people or by computers and machinery. Stakeholders tend to have different
Assume you are a systems designer and your organization is building a new inventory management system. In reviewing the requirements documentation, it appears that an error was made and some
Assume you are designing a retail point-of-sale (POS) system for your company, What are the typical system interfaces of it point-of-sale system that need to be taken into account in designing the
As business technology becomes more powerful and sophisticated, many businesses are redesigning their single-function information systems, such as sales, into cross-functional information systems
Middleware is frequently used in systems integration projects when different information systems are tied together to exchange data via system-to-system interfaces. Briefly define middleware, explain
In identifying and documenting business requirements, systems analysts need to be able to distinguish between laws, policies, and procedures. Why is this important?
It is common for system owners and system users to have very different views of the same business processes used in an information system. Why do you think this is? Consider an airline that is
System designers and system builders also tend to have very different views of system building blocks. Explain the different ways that designers and builders might view the communication building
System designers frequently have a number of technical design options to choose from when designing interfaces between different systems and applications. What should designers always keep in mind
The framework for information systems architecture used in this textbook is derived from the pioneering framework developed by John Zachman. What is one of the advantages of designing systems based
At times, an organization may choose to purchase a commercial off-the-shelf (COIS) software package. What do you think are the pros and cons of using off-the-shelf applications compared to custom
If an organization chose a COTS package as their solution, would the view of the system builder be the same as for a custom-built application? If not. how would it be different?
Select a medium to large organization The organization can be in the public or private sector, and it can be one with which you are personally familiar or one for which information is readily
Contact and interview two or three systems analysts, in different organizations if possible, regarding this chapter's subtopic on communication building blocks.a. Describe the nature of each
Select an information system used by a medium to larger organization. it can be one with which you are personally familiar or one whose organizational structure and information system you have
Imagine that you are the owner of a small business and are searching on the Web for al company that can supply the products or services needed by your business. Find several business-to-business
Research several articles published in the last few years in your library and/or on the Web that discuss ethical issues related to systems design.a. What articles were you able to find?b. Describe
The textbook uses a framework for describing information systems architecture that is based upon John Zachman's-Framework for Information Systems Architecture" model. Using the Web or your school
An II manager requests an amount of funds to upgrade the e-mail server. Without the necessary upgrade, the server will be burdened by the sheer amount of e-mail and will run the risk of crashing. The
Interview at least one person in marketing, customer service, and accounting/payroll in the same company: What types of information do they handle? Do they share information across departments? Do
Government service departments are deeply burdened by the amount of data that they hold and process: Interview someone from a service department and draft a short essay. Service departments that must
Your neighborhood grocery store, Wow Grocery, always seems to be running out of your favorite ice cream. In frustration, you ask the store manager why they always seem to be out. The store manager,
What can Wow Grocery do to automate or manage its inventory system without spending much money? Draft your solution into a short paper.
What is mode-driven development?
Table \(3-1\) in the textbook illustrates the difference in a typical project's duration, person months, quality, and cost, depending upon whether an organization's system development process is at
There are many different systems development methodologies in use, each with its own terminology, and number and scope of phases. Search the Web for information on two or three of these other systems
What ethical issues might arise during the fact-finding process, and how should they be handled?
Why are conventional files easy to design and implement?
Determine the business's or organization's requirements through interviews, forms, surveys, JAD, and the like, and create the appropriate models and studies for the Web site. Don't forget to consider
Modem databases require a high level of skill and knowledge to be adequately supported. See if you can interview the database administrators in three or four local organizations which nse
What is at common misconception about databases?
CASE tools, such as system Architect, are used for database development and support. Search on the Web and in trade journals for some of the popular CASE tools currently in use.a. What CASE tools did
Why is storing data in a database riskier than storing it in a file?
Match the following terms in the first column with the definitions or examples in the second column. L DBMS 2. Transaction file 3. Data warehouse 4. Primary key 5. SQL 6. CASE tool 7. Hungarian
Currently, rotational database technology is probably the most prevalent database technology used in modern information technology shops. But database technology is an evolving field and new
Create the Web site using appropriate technologies, getting a domain name, and so forth. Set up e-mail with the domain name, as well. If it is appropriate for the company to have shopping cart and
After you talk to the database administrators regarding training, also ask them about:a. Normalization-do they generally normalize to third normal form? Higher?b. In general, how much time is spent
Consider a local car dealership that has been in business for fifteen years or \(\mathrm{so}\). In addition to selling and leasing new and used cars, the dealership has a parts department, service
You need to calculate the anticipated database capacity for constructing a database with four tables, is shown below:Table 1 will be initially loaded with 200,000 records, Table 2 with 100,000
You are studying the design documentation for an extremely large information system used by your organization. As expected, all entities on the logical data model are in third normal form. But in
In comparing operational databases and data warehouses, which generally has fewer CRUD activities? Why?
What are some common types of conventional files and tables?
In transforming a logical data model into 2 physical relational database schema, what options does the database administrator have in how super type/subtype entities are implemented? Table 1 Table 2
What is a fixed-length record structure?
You are a systems designer and have a friend who owns a small bookstore and mail-order business spectializing in rare books and first editions. Total sales average about a dozen books per day, store
What is a database engine?
Explain the concept of referential integrity, and give an example. What is a referential integrity error? Provide an example, and explain the possible consequences of a referential integrity error.
The deletion rules for enforcing referential integrity include both Delete. Cascade and Delete Restrict In general, what criteria should a DBA use in deciding whether to use a Delete: Cascade or
What is metadata? if database administrators need to define metadata, what kind of language should they use (DDL or DML)? Why?
What is a relational database?
In 1983. Edward Tufte wrote a book called The Visual Display of Quantitative Information. Many leading journals consider this book to be the definitive work on this subject. Since that time, Tufte
Select an application that is used in your organization or school and that has more than one user interface screen. Also, try to select an application that you haven't used before, or at least one
Fowler has developed a number of approaches to reusability since his initial work on design patterns, Research some of his recent work on the theme of reusability: Select one and write a critical
The key element in object-oriented technology is its potential for reusability. Martin Fowler, the chief scientist at Thought Works, is a leader in the use of design patterns and has written numerous
You have been asked ro design a series of user interface screens that will be used by both employees and customers. You proudly roll out your prototypes, expecting accolades and high pratse. Instead,
Based on your second interview (mini case 3), revise your interface design. Then submit your work from the previous three mini cases and this revision in a professional and complete deliverable to
Fill in the blanks for the following statements: a. Some interfaces use a syntax that allows users to ask questions in their b. The step in user interface design is to to the steps as part of the
Match the definitions or examples in the first column with the terms in the second column: A Frequently required multiple level menu navigation B. An application's overall sequence of screens and
Create a final exam for this class. Post an electronic copy to the class Web site, as well as a hard copy to your professor. Include solutions to the questions, per your professor's direction.
What are the three areas of systems development knowledge suggested in the textbook that are important to system support?
What are control flow knots, and why should they be avoided?
At the time that most projects are initiated, in estimate is made of the expected life span of the new system as a part of a cost-benefit evaluation. However, on an anecdotal basis, it appears that
Compile the work you have done throughout this class for the department of the government that you chose: Create two deliverables: one for your contact at the department, and one for your professor.
What are the four major support activities suggested in the textbook?
Answer true or false to the following statements:a. Microsoft's SourceSafe is an example of a software-based librarian.b. In a typical IT shop, analysts spend at most about 20 percent of their time
The objective of software metrics is to provide I mathematically valid method for measuring software quality and productivity. Research articles on the Web and/or in your school library regarding
Why is system maintenance necessary?
All systems eventually grow old and become obsolete. What is the rule of thumb as to when a system should be replaced?
Systems operations and support generally consume an enormous amount of the resources available in the typical IT shop of an organization. Many CIOs are avidfy interested in systems support software
Follow up with the contact at the government department. Did they have any questions? Any comments on your work? Does the prototype do everything they wanted and needed? Does it work on their network
What are the tasks needed for system maintenance?
Technical support to users is one of the cornerstones of systems support which can consume a tremendous amount of time and staff resources, Research this topic in trade jourials and in forums on the
What does the term unsubstantiated bug mean? What should analysts do when an unsubstantiated bug is found?
One of the common support activities occurs when a software manufacturer, such as Oracle or Microsoft, releases an updated version of one of their software packages; Often the effort to upgrade is
Have computers become sophisticated enough to be powerful extensions of how humans think and communicate? Or do computers and humans capture and process data and transform it into information in

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