A(n)________ is an attribute that must have a value forevery entity instance.
A)Derived attribute
B)Composite attribute
C)Required attribute
D)Optional attribute

Question

Quizplus · Accepted Answer

Required attributes are attributes that must have a value for every entity instance. Derived attributes are calculated from other attributes, composite attributes are made up of multiple individual attributes, and optional attributes may or may not have a value for a given entity instance.

A(n)________ Is an Attribute That Must Have a Value Forevery