ER Model and Business Rules Generalization is the process of defining more general entity types from a set of more specialized entity types. False True False True ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules A supertype/subtype hierarchy has which of the following features? Subtypes at the lower lever in the hierarchy inherit attributes only from their immediate supertype. Attributes are assigned at the lowest logical level. Subtypes at the higher lever in the hierarchy inherit attributes only from their immediate subtype. Attributes are assigned at the highest logical level. Subtypes at the lower lever in the hierarchy inherit attributes only from their immediate supertype. Attributes are assigned at the lowest logical level. Subtypes at the higher lever in the hierarchy inherit attributes only from their immediate subtype. Attributes are assigned at the highest logical level. 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 total specialization Disjoint with partial specialization Overlap with total specialization Overlap with partial specialization Disjoint with total specialization Disjoint with partial specialization Overlap with total specialization Overlap with partial specialization ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules A rectangle 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 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 A supertype can only have only one subtype. True False True False ANSWER DOWNLOAD EXAMIANS APP
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