265 - Text - Chapter 2

265 - Text - Chapter 2 - Chapter 2: Systems Analysis and...

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Chapter 2: Systems Analysis and Design 1 of 40 by: Uday S. Murthy, Ph.D., ACA Systems Analysis and Design Learning Objectives After studying this chapter you should be able to: generally describe what causes the motivation for systems development describe the nature of the systems life cycle describe the systems development life cycle describe the steps in the systems development life cycle explain the tasks involved in systems analysis , systems design , systems development , systems implementation , and systems operation and maintenance distinguish between logical and physical modeling discuss the role of data modeling using ER diagrams and process modeling using data flow diagrams in the database design process describe project management techniques, with specific reference to Pert and Gantt charts discuss alternatives to the traditional systems development life cycle such as CASE , RAD , JAD , and prototyping explain the main steps involved in the process of selecting and acquiring an accounting software package The previous chapter covered the elements of database systems. This book adopts a database approach to accounting information systems. In this chapter we discuss the steps to be undertaken to design and develop a database driven accounting system--a process referred to as the systems development life cycle. We will distinguish between the systems life cycle , through which all systems must pass, and the systems development life cycle (SDLC) which is the series of steps involved in creating a new information system. Alternatives to the traditional systems development life cycle will also be discussed. A popular alternative to the time-consuming and expensive process of custom-developing a system by going through the SDLC is to acquire an accounting software package.
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Chapter 2: Systems Analysis and Design 2 of 40 The development of systems Information systems are designed to provide useful information for decision making. We will first examine the driving forces behind new information systems development. Next, we shall consider the systems life cycle, which describe the stages through which all systems pass. Finally, we shall discuss the systems development life cycle, which comprises the steps required to actually develop information systems. Motivation for systems change The motivation for systems change--either the custom development of a new information system or the acquisition of a new software package--can originate in a number of ways. Users at various levels in the organization are usually behind new systems development, or significant modifications to existing systems. Deficiencies in existing systems, information needs that go unmet, lack of timeliness of information, difficulty in using the system or accessing information—these are examples of user complaints that spur the development of new systems. If the purpose of information systems is to provide information useful for decision making, and if existing systems are
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This note was uploaded on 08/12/2008 for the course MBA 265 taught by Professor James during the Spring '08 term at CSU Sacramento.

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265 - Text - Chapter 2 - Chapter 2: Systems Analysis and...

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