▁to ▁be ▁used ▁by ▁its ▁end ▁users ▁and ▁supported ▁by ▁its ▁support ▁and ▁operations ▁staff . ▁ ▁Oper ations ▁and ▁maintenance ▁▁ ▁The ▁deployment ▁of ▁the ▁system ▁includes ▁changes ▁and ▁enh anc ements ▁before ▁the ▁de comm ission ing ▁or ▁sun set ▁of ▁the ▁system . ▁M aint aining ▁the ▁system ▁is ▁an ▁important ▁aspect ▁of ▁SD LC . ▁As ▁key ▁personnel ▁change ▁positions ▁in ▁the ▁organization , ▁new ▁changes ▁will ▁be ▁implemented . ▁There ▁are ▁two ▁approaches ▁to ▁system ▁development : ▁the ▁traditional ▁approach ▁( struct ured ) ▁and ▁object ▁orient ed . ▁Information ▁engineering ▁includes ▁the ▁traditional ▁system ▁approach , ▁which ▁is ▁also ▁called ▁the ▁struct ured ▁analysis ▁and ▁design ▁technique . ▁The ▁object ▁orient ed ▁approach ▁views ▁information ▁system ▁as ▁a ▁collection ▁of ▁objects ▁that ▁are ▁integrated ▁with ▁each ▁other ▁to ▁make ▁a ▁full ▁and ▁complete ▁information ▁system . ▁ ▁E valu ation ▁▁ ▁The ▁final ▁phase ▁of ▁the ▁SD LC ▁is ▁to ▁measure ▁the ▁effect iveness ▁of ▁the ▁system ▁and ▁evaluate ▁potential ▁enh anc ements . ▁ ▁Systems ▁analysis ▁and ▁design ▁▁ ▁The ▁systems ▁analysis ▁and ▁design ▁( S AD ) ▁is ▁the ▁process ▁of ▁developing ▁information ▁systems ▁( IS ) ▁that ▁effectively ▁use ▁hardware , ▁software , ▁data , ▁processes , ▁and ▁people ▁to ▁support ▁the ▁company ' s ▁business es ▁object ives . ▁ ▁System ▁analysis ▁and ▁design ▁can ▁be ▁considered ▁the ▁meta - development ▁activity , ▁which ▁serves ▁to ▁set ▁the ▁stage ▁and ▁bound ▁the ▁problem . ▁ ▁S AD ▁can ▁be ▁lever aged ▁to ▁set