Design is the process of defining an information system that meets the needs of the users. The human interface is considered as well as the characteristics of the specific environments in which the system runs.
In CA Gen, Design concentrates on selected areas of the entire system. These selected areas, called business systems, let you design a manageable portion of a system at a time. A business system is a group of related procedures. Each procedure can implement zero, one, or more elementary processes. An elementary process defines what must be done to support the business activities. A procedure defines how it is done. Elementary processes are intended to be independent of procedures and can be reused in different types of procedures, such as batch, terminal-based, GUI, and client/server.
To support the procedures, you may find it necessary to design other procedures, provide system or operational controls to convert data, and so on. The activities during system design, therefore, tend to be iterative. You design part of the system, such as the interface, see if it meets the needs of the users, and refine the design as needed. After your design meets the needs of the users, you can use that design in subsequent phases of development, such as Construction.
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