Maps allocate keys to values and cannot contain duplicate keys, i.e., the key-to-value mapping is a __________ mapping.
A) many-to-many.
B) many-to-one.
C) one-to-many.
D) one-to-one.

Question

Quizplus · Accepted Answer

One-to-one mapping means that each key is uniquely assigned to a single value, which is the requirement for this scenario where keys cannot contain duplicates.

Maps Allocate Keys to Values and Cannot Contain Duplicate Keys