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A rule that states that each foreign key value must match a primary key value in the other relation is called the: 1) foregin/primary match rule. 2) key match rule. referential integrity constraint. 4) entity key group rule. In the figure below, what is depicted? Student Student IDStudent Name Campus Address Major Enrolle Courc I utI erYea Course ID Course Credits Course Description Credits 1) A one-to-many relationship 2) A unary relationship 3) An associative entity 4) A one-to-one relationship