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Identify false MySQL foreign key statement
MySQL Foreign Key Statements
Evaluate the following statements regarding MySQL foreign keys. Identify the single statement that is false and provide a brief justification for your choice.
Statements:
- A) A column might have a foreign key reference to itself.
- B) MySQL supports foreign key references between one column and another within a table.
- C) Corresponding columns in the foreign key and the referenced key must have similar data types.
- D) None of the above; all statements are correct.
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Core dilemma
Distinguishing between theoretical knowledge of SQL syntax and a practical, nuanced understanding of relational database integrity constraints, their implementation details, and performance implications in a real-world system.
Mid-level signals3
Senior signals5
Red flags4
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Unlock the interviewer X-Ray rubric, tradeoff matrix, stress tests, clarifying questions, and key concepts.
Identify false MySQL foreign key statement
MySQL Foreign Key Statements
Evaluate the following statements regarding MySQL foreign keys. Identify the single statement that is false and provide a brief justification for your choice.
Statements:
- A) A column might have a foreign key reference to itself.
- B) MySQL supports foreign key references between one column and another within a table.
- C) Corresponding columns in the foreign key and the referenced key must have similar data types.
- D) None of the above; all statements are correct.