Chapter 7 - Systems Analysis and Design

Abstract

This chapter discusses the nature of the processes of systems analysis and design, which varies considerably with the type of problem being tackled. If the problem is basically a numerical one, the stage of systems analysis may consist only of the statement of the objectives of the system, as the nature and usage of the information may be well established. Systems design for such a system may simply consist of selecting the appropriate technique of numerical or statistical analysis. On the other hand, in any system concerned with rapid response to external events or with files of data, the stages of systems analysis and design require much more time and effort. The processes of detailed systems design require a considerable knowledge of computing techniques and a thorough understanding of the requirements, conventions, and other attitudes of those who will use the system. A mediocre systems design will lead to a mediocre system, however brilliant the programming. Sound systems analysis and design with second-rate programming may lead to inefficient use of computing resources, but from the user's point of view, this may be irrelevant as long as the system performs adequately the functions that the user requires.