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Pengertian program data independence3/12/2024 Physical Data Independence is achieved by modifying the physical layer to logical layer mapping (PL-LL mapping). How is Physical Data Independence achieved? Ideally, when we change the physical level, we would not want to alter the logical and view level. Hence, in this way, Physical Data Independence enables us to do Performance Tuning. This is because we may want to add or remove files and indexes to enhance the performance of the database system and make it faster. Instances of why we may want to do any sort of Data modification at the physical level- We may want to alter or change the data at the physical level.
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