Question: While mapping a binary 1:N relationship when the N side has full participation, why do we include the key of the 1 side of the

While mapping a binary 1:N relationship when the N side has full participation, why do we include the key of the 1 side of the table in the N side of the table? What would be wrong if we included the key of the N side of the table in the 1 side of the table?

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