Discussion
In a 1:N relationship, the foreign key is placed in:
Answer: C
Correct answer: the child table.
The foreign key always goes on the many side. Each child row points to one parent, so a single foreign key column suffices; putting it in the parent would require room for an unknown number of child references in one row, which a relation cannot provide. That asymmetry is what makes parent and child meaningful in a 1:N relationship.
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