Which of the following defines the nature of the relationship?
Correct answer: A. One-to-one
- A. One-to-one
- B. Modality
- C. Both A and B
- D. All of the above
Explanation
A one-to-one relationship is a type of relationship between two entities where one entity is associated with exactly one other entity, and vice versa. In the context of databases, a one-to-one relationship is a fundamental relational database concept. For example, in a database of automobiles, a car (entity) can have one Vehicle Identification Number (VIN) (entity), and a VIN can only be associated with one car. This is a one-to-one relationship.
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