Question: Which ER Modeling feature can be expected to result in the use of one foreign key such as the one labeled FK1 in the relational

Which ER Modeling feature can be expected to result in the use of one foreign key such as the one labeled FK1 in the relational diagram below? Entity_2 Entity_1 PK el_id PK att el a e2_id att_e2_a el_id att_el_b FK1 A composite attribute Amany-to-many relationship A one to many relationship

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