Abstract
This chapter describes a hypothetical case study of an information system design project. A typical design project has three distinct phases: the preliminary study and problem definition phase, the design phase, and the implementation phase. In the preliminary study and problem definition phase, the analyst defines what the client generally wants from the system and how the target system functions. This phase concludes with a functional model that clearly defines the boundaries of the study. During the design phase, the analyst focuses on the user-information needs and models the requirements for each user in a data model format. This phase ends when these individual user views are combined into a global data model. This phase produces a logical database model that can be directly converted into database tables. Finally, during the implementation phase, the tables are created and the forms and reports are designed to serve the client's stated needs. The process of system analysis and information system design reoccurs regularly to meet the changing requirements as described in the case study. The approach to project execution, as illustrated in the case study, provides a logical framework for executing such projects.
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