ER Model and Business Rules Use of a supertype/subtype relationship is necessary when which of the following exists? Attributes apply to all of the instances of an entity type. An instance of a subtype participates in a relationship that is the same as the other subtypes. 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. Attributes apply to all of the instances of an entity type. An instance of a subtype participates in a relationship that is the same as the other subtypes. 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. ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules Which of the following statements concerning business rules is true? It should be complex. All of these It should not be convertible to computer code. It may include restrictions. It should be complex. All of these It should not be convertible to computer code. It may include restrictions. 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
ER Model and Business Rules A supertype can only have only one subtype. True False True False ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules An action assertion must include which of the following? All of these Corresponding object Action Anchor object All of these Corresponding object Action Anchor object ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules An ERD that has had the entities clustered will display more entities. False True False True ANSWER DOWNLOAD EXAMIANS APP
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