Question

Which of the following statements is not true about entity supertypes and subtypes?

a. An entity supertype is a generic entity type that is related to one or more entity subtypes.

b. The entity supertype contains common characteristics with subtype.

c. The entity subtypes contain common characteristics.

d. Entity supertypes and subtypes are organized in a specialization hierarchy.

Answer 1

Statement c is not true about entity supertypes and subtypes.

The entity subtypes contain common characteristics. - This is false statement.

Entity subtype contains unique characteristics.

Below is the true false for all the remaining statements.

An entity supertype is a generic entity type that is related to one or more entity subtypes. - TRUE

The entity supertype contains common characteristics with subtype. - TRUE

The entity subtypes contain common characteristics. - FALSE

Entity supertypes and subtypes are organized in a specialization hierarchy. - TRUE

We can say Supertype entities are parent entities and subtype entities are child entities