ER Model and Business Rules An entity instance of a subtype represents the same entity instance of a supertype. True False True False ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules A subtype discriminator of the supertype is an attribute whose values determine the target subtype(s). True False True False ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules When an entity instance must be a member of only one subtype, it is which of the following? Disjoint with partial specialization Disjoint with total specialization Overlap with partial specialization Overlap with total specialization Disjoint with partial specialization Disjoint with total specialization Overlap with partial specialization Overlap with total specialization 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 A supertype/subtype hierarchy is which of the following? Each supertype has only one attribute. Each supertype has only one subtype. Each subtype has only one supertype. Each subtype has only one attribute. Each supertype has only one attribute. Each supertype has only one subtype. Each subtype has only one supertype. Each subtype has only one attribute. ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules Which one of the following symbols is not used in an ERD? Circle Rectangle Diamond Oval Circle Rectangle Diamond Oval ANSWER DOWNLOAD EXAMIANS APP
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