Which key is used to establish a relationship between two relational database tables?
Options
- A. Primary key
- B. Foreign key
- C. Candidate 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)
B. Foreign key
Detailed Explanation
- Foreign key: An attribute or set of attributes in one table that references a candidate key, commonly the primary key, of another or the same table.
- It establishes relationships between tables.
- It helps maintain referential integrity.