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Question:

Consider the following scenarios and explain whether they achieved logical data independence or physical data independence:

scenario 1: You added a new column called age in the employee table of the company database. The company uses an Employee management system for attendance, leaves, salary, projects etc. The age information will not appear to any users using the system.

scenario 2: Your company is upgrading their system. They previously used HDD (hard disk drive) for data storage. Now they shifted to SSD(solid state drive) for more efficient data management. The company uses a Database System for employee attendance, leaves, salary, projects etc.