For the Following Entity-Relationship Diagram, What Could the Primary Key

question 34

Multiple Choice

For the following entity-relationship diagram, what could the primary key be in the Grade entity?

• A) Primary key in Student entity
• B) Primary key in Course entity
• C) Its own primary key.
• D) Primary key made up of the primary keys in Student entity and Course entity
• E) It doesn't need a primary key.

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