ER Model and Business Rules A supertype/subtype hierarchy has which of the following features? Attributes are assigned at the lowest logical level. Subtypes at the lower lever in the hierarchy inherit attributes only from their immediate supertype. Attributes are assigned at the highest logical level. Subtypes at the higher lever in the hierarchy inherit attributes only from their immediate subtype. Attributes are assigned at the lowest logical level. Subtypes at the lower lever in the hierarchy inherit attributes only from their immediate supertype. Attributes are assigned at the highest logical level. Subtypes at the higher lever in the hierarchy inherit attributes only from their immediate subtype. ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules Which one of the following symbols is not used in an ERD? Oval Diamond Circle Rectangle Oval Diamond Circle Rectangle ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules A subtype discriminator is which of the following? An attribute of the supertype whose values determine the supertype An attribute of the subtype whose values determine the subtype An attribute of the subtype whose values determine the supertype An attribute of the supertype whose values determine the subtype An attribute of the supertype whose values determine the supertype An attribute of the subtype whose values determine the subtype An attribute of the subtype whose values determine the supertype An attribute of the supertype whose values determine the subtype ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules An oval represents which of the following in an EER? Attribute Relationship Entity Optional One Attribute Relationship Entity Optional One ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules A supertype can only have only one subtype. False True False True ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules A supertype is an entity type that shares common attributes or relationships distinct from other subgroupings. False True False True ANSWER DOWNLOAD EXAMIANS APP
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