Page 84 - E1 Integrated Workbook STUDENT 2018
P. 84

Chapter 6





                           System maintenance





                                              Three methods of system

                                                     maintenance




                         Corrective                     Adaptive                      Perfective
                                                                                    (preventative)
                     The correction of               Changes to the
                         technical                system are made to                 Upgrades to
                                                                                    hardware and
                      difficulties, for           reflect the changing
                     example, due to                  needs of the                   software to
                                                                                   maximise speed
                      virus infection,                organisation.
                     hardware failure.                                                  and the
                                                                                 functionality of the
                                                                                       system.













































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