7.2 The systems life cycle: Design and development

The design stage

The design stage is about identifying modules that will make up the solution to the problem. The analyst creates modules to address the problems identified in the analysis stage.

The most significant element of this stage is that of file structure. The analyst has to work out the content of the data tables that will be needed. This requires very careful consideration because the entire system depends on the database not only holding the necessary information, but that it is held in the correct format.

At the end of the design stage the system analyst will have design on the:

  • data structure
  • file formats
  • input and output formats
  • module specifications
  • relationships that need to exist between the different modules (and systems) in the organisation.

System flowcharts

A system flowcharts is a diagram of the flow of data or the sequence of steps needed to complete a process.
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System flowchart Symbols

 

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