Which concept allows changes in the physical storage of data without affecting the logical structure of the database?
Options
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A.
Logical data independence
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B.
Physical data independence
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C.
Data redundancy
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D.
More than one of the above
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E.
None of the above
Correct Answer (Detailed Explanation is Below)
B.
Physical data independence
Detailed Explanation
- Physical data independence: Allows changes in physical storage without requiring changes to the conceptual schema.
- Examples include changing file organization or storage devices.
- Logical data independence: Allows changes in the conceptual schema without affecting external views.
