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 Overlapping and disjoint subtypes have different approaches on how the subtype discriminator is applied. False True False True ANSWER DOWNLOAD EXAMIANS APP
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. 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. ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules A supertype/subtype hierarchy is which of the following? Each supertype has only one subtype. Each subtype has only one supertype. Each supertype has only one attribute. Each subtype has only one attribute. Each supertype has only one subtype. Each subtype has only one supertype. Each supertype has only one attribute. Each subtype has only one attribute. ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules Generalization is the process of defining more general entity types from a set of more specialized entity types. True False True False ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules An action assertion must include which of the following? Anchor object All of these Corresponding object Action Anchor object All of these Corresponding object Action ANSWER DOWNLOAD EXAMIANS APP
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