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. False True TRUE ANSWER : ? YOUR ANSWER : ?
An action assertion is a statement that expresses some aspect of the static structure of the organization. True False TRUE ANSWER : ? YOUR ANSWER : ?
Overlapping and disjoint subtypes have different approaches on how the subtype discriminator is applied. False True TRUE ANSWER : ? YOUR ANSWER : ?
It is appropriate to use a supertype/subtype relationship when there are attributes that apply to some of the instances of an entity type. False True TRUE ANSWER : ? YOUR ANSWER : ?
Action assertions have traditionally been implemented within an application program. False True TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following symbols is not used in an ERD? Oval Circle Diamond Rectangle TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not one of the three ways to classify an action assertion? Authorization Integrity Control Enabler Condition TRUE ANSWER : ? YOUR ANSWER : ?
A supertype/subtype hierarchy is which of the following? Each supertype has only one subtype. Each subtype has only one supertype. Each subtype has only one attribute. Each supertype has only one attribute. TRUE ANSWER : ? YOUR ANSWER : ?
A rectangle represents which of the following in an EER? Attribute Optional One Entity Relationship TRUE ANSWER : ? YOUR ANSWER : ?