ER Model and Business Rules Use of a supertype/subtype relationship is necessary when which of the following exists? No attributes apply to any of the instances of an entity type. An instance of a subtype participates in a relationship that is the same as the other subtypes. Attributes apply to all of the instances of an entity type. An instance of a subtype participates in a relationship that is unique to that subtype. No attributes apply to any of the instances of an entity type. An instance of a subtype participates in a relationship that is the same as the other subtypes. Attributes apply to all of the instances of an entity type. An instance of a subtype participates in a relationship that is unique to that subtype. ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules Which of the following is not one of the three ways to classify an action assertion? Condition Authorization Enabler Integrity Control Condition Authorization Enabler Integrity Control ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules An entity instance of a subtype represents the same entity instance of a supertype. False True False True ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules There is cardinality on an EER between the supertype and subtype. False True False True ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules Which one of the following symbols is not used in an ERD? Diamond Oval Rectangle Circle Diamond Oval Rectangle Circle ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules An entity cluster is a set of one or more entity types and associated relationships. False True False True ANSWER DOWNLOAD EXAMIANS APP
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