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Unformatted text preview: End of Chapter Materials and Suggested Solutions Chapter 4-Page Accounting, Information Technology, and Business Solutions 2/e by Hollander, Denna, and Cherrington Chapter 4: Systems Analysis and Design of a Business Event-Driven System Review Questions R1. What are the four systems analysis and design phases introduced in this chapter? What happens in each phase? I. The Analysis Phase determining systems requirements and structuring the requirements by creating process models, logical models, and conceptual data models. II. The Logical Design Phase developing the logical design of the database and designing forms, reports, interfaces, and dialogues. III. The Physical Design Phase designing physical files, databases, and programming instructions. IV. The Implementation and Maintenance Phase performing system coding, testing, installing, documenting, training users, supporting users, and maintaining the system. R2. What is Structured English, and what is its purpose? Structured English is a code-independent way of communicating program logic. It is a language that has a limited vocabulary and syntax. It eliminates adjectives, adverbs, compound sentences, non-imperative expressions, all but a limited set of conditional and logic structures, most punctuation, and footnote type details. It is used to plan and document the steps of a computer program without using a programming language. It is used to define the detailed logic of each information process. R3. How do you determine how many recording, maintaining, and reporting information processes are needed in an IT application? You need one recording process in your IT application for each business event object in the applications REAL model. You need one maintenance process in your IT application for each resource, agent, and location object in the applications REAL model. The number of reporting processes required for an application is a function of the number of views required by information customers. You will need one reporting process for each required output view. R4. What are three types of outputs that users need? Source documents: printed or electronic transmission of event data documentation Preformatted reports: reports that are regularly used by information customers Ad hoc reports: reports that information customers design and request to provide a new view or a view that is rarely used. R5. Explain the structure and usefulness of a context diagram. A context diagram consists of a graphical model and dictionary. The circle of the graphical model represents the processing and data within the application. The model uses lines going into the circle to identify data recorded by the application and lines going out of the circle to identify output views 1 End of Chapter Materials and Suggested Solutions Chapter 4-Page Accounting, Information Technology, and Business Solutions 2/e by Hollander, Denna, and Cherrington provided by the application. Each of the flow lines (inputs and outputs) is identified by a name. Each of the flow lines (inputs and outputs) is identified by a name....
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- Fall '09