Curioustab

Home » Database » ER Model and Business Rules

A supertype is an entity type that shares common attributes or relationships distinct from other subgroupings.

True

Correct Answer: False

← Previous Question Next Question→

More Questions from ER Model and Business Rules

Total specialization is represented by double lines between the supertype and subtype on an EER.
If an entity adheres to the disjoint rule, then an entity instance can be a member of more than one entity for a given supertype.
A subtype discriminator of the supertype is an attribute whose values determine the target subtype(s).
A supertype can only have only one subtype.
Packaged data models are meant to be exactly right straight out of the box.
It is appropriate to use a supertype/subtype relationship when there are attributes that apply to some of the instances of an entity type.
Action assertions have traditionally been implemented within an application program.
An ERD that has had the entities clustered will display more entities.
An action assertion is a statement that expresses some aspect of the static structure of the organization.
An entity instance of a subtype represents the same entity instance of a supertype.

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion