Which anomaly occurs when deleting one record unintentionally removes other useful information?
Options
- A. Insertion anomaly
- B. Deletion anomaly
- C. Update anomaly
- 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. Deletion anomaly
Detailed Explanation
- Deletion anomaly: Occurs when deleting a record also removes information that should have been retained.
- It is common in poorly designed and highly redundant tables.
- Normalization helps separate independent facts into appropriate relations.