Oracle Database SQL — Question 125

Which three are key components of an Entity Relationship Model? (Choose three.)

Answer options

• A. an activity
• B. a table
• C. a relationship
• D. an attribute
• E. a unique identifier
• F. an entity

Correct answer: C, D, F

Explanation

The correct answers are C, D, and F because a relationship connects entities, an attribute describes properties of entities, and an entity represents a real-world object. Options A, B, and E do not define key components of an Entity Relationship Model, as an activity is not a model component, a table is a representation, and a unique identifier is a property rather than a core element.