A Key Must Be Unique

question 46

True/False

A key must be unique.

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Definitions:

Early Infancy

The initial stage of a child's life, typically considered to be the first few months after birth.

Cognitive Development

Refers to the growth and change in intellectual capabilities such as thinking, reasoning, and understanding.

Sensorimotor

The first stage in Piaget's theory of cognitive development, occurring from birth to about 2 years of age, where infants learn about the world through their sensory and motor interactions.

Preoperational

A stage in Piaget's theory of cognitive development, occurring from approximately ages 2 to 7, marked by the emergence of symbolic thought and egocentrism but a lack of operational logic.