SOFTWARE MAINTENANCE
HOME SYSTEM LIFECYCLE MODEL TYPES OF MAINTENANCE MAINTENANCE ACTIVITIES

FIVE TYPES OF MAINTENANCE

There are five types of Maintenance activities.
  • CORRECTIVE MAINTENANCE

  • PERFECTIVE MAINTENANCE

  • ADAPTIVE MAINTENANCE

  • PREVENTIVE MAINTENANCE

  • EMERGENCY MAINTENANCE



    • The Five Maintenace type are broadly classified as Bug fixing activiites and Development/Migration activities

    Corrective Maintenance-
      Identify and remove defects
      Correct actual errors

    BUG FIXING

    Preventive Maintenance-
      Identify and detect latent faults
      Systems with safety concerns
    Emergency Maintenance-
      Unscheduled corrective maintenance (Risks due to reduced testing)
    Perfective Maintenance-
      Improve performance, dependability, maintainability
      Add new functionality

    DEVELOPMENT/MIGRATION

    Adaptive Maintenance-
      Adapt to a new/upgraded environment (e.g., hardware, operating system, middleware)
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