Which of the following represents the capacity to change the conceptual schema…
2019
Which of the following represents the capacity to change the conceptual schema without having to change external schemas or application programs?
Answer: D. Logical data independence — Logical data independence allows changes to the conceptual schema without affecting external schemas or application programs.
- A.
Virtual data independence
- B.
Hierarchical data independence
- C.
Physical data independence
- D.
Logical data independence
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Correct answer: D
Logical data independence allows changes to the conceptual schema without affecting external schemas or application programs.
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