Which referential action automatically deletes related child records when a referenced parent record is deleted?
Options
- A. ON DELETE CASCADE
- B. ON UPDATE SET DEFAULT
- C. ON INSERT CASCADE
- D. More than one of the above
- E. None of the above
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Quiz Practice:
Correct Answer (Detailed Explanation is Below)
A. ON DELETE CASCADE
Detailed Explanation
- ON DELETE CASCADE: Automatically deletes matching child records when the referenced parent record is deleted.
- It is defined as part of a foreign key constraint.
- It helps maintain referential integrity across related tables.