SQL : Why is it recommended to avoid unidirectional one-to-many association on a foreign key?

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SQL : Why is it recommended to avoid unidirectional one-to-many association on a foreign key?
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SQL : Why is it recommended to avoid unidirectional one-to-many association on a foreign key?
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Why association it unidirectional one-to-many is avoid recommended key? foreign on to : a SQL



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