ER Model and Business Rules Packaged data models are meant to be exactly right straight out of the box. True False True False ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules A supertype/subtype hierarchy is which of the following? Each subtype has only one attribute. Each subtype has only one supertype. Each supertype has only one attribute. Each supertype has only one subtype. Each subtype has only one attribute. Each subtype has only one supertype. Each supertype has only one attribute. Each supertype has only one subtype. ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules When an entity instance may be a member of multiple subtypes or it does not have to be a member of a subtype, it is which of the following? Overlap with total specialization Overlap with partial specialization Disjoint with total specialization Disjoint with partial specialization Overlap with total specialization Overlap with partial specialization Disjoint with total specialization Disjoint with partial specialization ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules It is appropriate to use a supertype/subtype relationship when there are attributes that apply to some of the instances of an entity type. True False True False ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules An oval represents which of the following in an EER? Entity Optional One Relationship Attribute Entity Optional One Relationship Attribute ANSWER DOWNLOAD EXAMIANS APP
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
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