Which key consists of two or more attributes used together to uniquely identify a record?
Options
- A. Simple key
- B. Foreign key
- C. Composite key
- D. More than one of the above
- E. None of the above
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Quiz Practice:
Correct Answer (Detailed Explanation is Below)
C. Composite key
Detailed Explanation
- Composite key: A key formed using two or more attributes.
- Example: Student_ID and Course_ID together can uniquely identify an enrollment record.
- Neither attribute may be unique by itself.