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Modern software design methodologies rarely use flowcharts anymore (especially not if you are doing object oriented design/programming).

The step by step design process goes as follows:

  1. requirements analysis *
  2. define acceptance test cases *
  3. preliminary design
  4. define top level test cases @
  5. detailed design
  6. define unit test cases @
  7. write code
  8. write unit test code and procedure @
  9. perform unit test @
  10. top level integration
  11. write top level test code and procedure @
  12. perform top level test @
  13. system level integration
  14. write system acceptance test code and procedure *
  15. perform acceptance test *
The steps marked with * are usually performed by a Systems Engineer and the rest are performed by a Software Engineer. The Systems Engineer can perform step 14 at any time after he performs step 2, he does not need to wait for step 13 to be done.

The steps marked with @ in some methodologies are performed by a Software Test Engineer not the Software Engineer that did the design for the purpose of independent verification and make sure the Software Engineer does not miss something because he "expects it to work".

In some methodologies step 7 is done by a Computer Programmer who does not have as much training, experience, and knowledge to qualify as a Software Engineer, but can write working code when given design documents.

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9y ago

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