Cost Models

• Estimating a project's cost can be very difficult
• Organisational experience plays a major role
• Cost estimates start from code estimates
• Code estimates can be measured in
  • Size (e.g. lines of code)
  • Function points (e.g. queries, screens, tables, ...)
  • Object points
• Constructive estimation techniques (like COCOMO II) exist, but require organisation and project-specific calibration

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