A Primary Key's Main Function Is to Uniquely Identify A(n)within

question 79

Multiple Choice

A primary key's main function is to uniquely identify a(n) within a table.

• A)attribute
• B)entity instance or row
• C)entity subtype
• D)natural key or identifier

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Definitions:

Formal Operational

A stage of cognitive development in which individuals become capable of abstract thinking and logical reasoning.

Concrete Operational

A stage in Piaget's theory of cognitive development where children gain the ability to think logically about concrete events.

Preoperational

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

Sensorimotor

Referring to the developmental stage in infants where they explore the world and learn through physical interactions, involving both sensory experiences and motor activities.