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Program Maintenance

  • It refers to the modification of a program after it has been compiled.
  • There are four kind of maintenance. They are
    • Corrective Maintenance: When a program after completion is put to operations some errors might show up because of some unexpected situations, untested areas. Such errors are fixed and this type of maintenance is called corrective maintenance.
    • Adaptive Maintenance: System maintenance are necessary when a program to be generated. To accommodate changing needs, time to time maintenance is done and is called as adaptive maintenance.
    • Preventive Maintenance: if possible errors can be identified and they are maintained to avoid them from automatic system down time is called preventive maintenance.
    • Perfective Maintenance: It is used in a faster growing area in the world. New technologies arise every moment in the real world, adapting the new technology and maintaining them is called perfective maintenance.

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