Data modeling with er model Practice Questions & Answers

In a one-to-many relationship, the entity that is on the many side of the relationship is called a(n) ________ entity.

In a one-to-many relationship, the entity that is on the many side of the relationship is called a(n) ________ entity.

A).  parent

B).  child

C).  instance

D).  subtype

Which type of entity represents a logical generalization whose actual occurrence is represented by a second, associated entity?

Which type of entity represents a logical generalization whose actual occurrence is represented by a second, associated entity?

A).  Supertype entity

B).  Subtype entity

C).  Archetype entity

D).  Instance entity

Which type of entity has its relationship to another entity determined by an attribute in that other entity called a discriminator?

Which type of entity has its relationship to another entity determined by an attribute in that other entity called a discriminator?

A).  Supertype entity

B).  Subtype entity

C).  Archetype entity

D).  Instance entity

Entities can be associated with one another in which of the following?

Entities can be associated with one another in which of the following?

A).  Entities

B).  Attributes

C).  Identifiers

D).  Relationships

In which of the following is a single-entity instance of one type of related to a single-entity instance of another type?

In which of the following is a single-entity instance of one type of related to a single-entity instance of another type?

A).  One-to-One Relationship

B).  One-to-Many Relationship

C).  Many-to-Many Relationship

D).  Composite Relationship

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