Which database concept allows changes in the schema at one level without requiring changes at the next higher level?
Options
- A. Data Redundancy
- B. Data Independence
- C. Data Duplication
- D. More than one of the above
- E. None of the above
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Quiz Practice:
Correct Answer (Detailed Explanation is Below)
B. Data Independence
Detailed Explanation
- Data Independence allows changes in one database schema level without affecting the next higher level.
- Its two main types are Physical Data Independence and Logical Data Independence.