Waterfall

Phases

  • Conception
  • Initiation
  • Analysis
  • Design (validation)
  • Construction
  • Testing
  • Maintenance

Sashimi model

The Sashimi model (so called because it features overlapping phases, like the overlapping fish of Japanese sashimi) is sometimes referred to as the "waterfall model with overlapping phases" or "the waterfall model with feedback".

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