ER Model and Business Rules A supertype/subtype hierarchy has which of the following features? Attributes are assigned at the lowest logical level. Attributes are assigned at the highest logical level. Subtypes at the higher lever in the hierarchy inherit attributes only from their immediate subtype. Subtypes at the lower lever in the hierarchy inherit attributes only from their immediate supertype. Attributes are assigned at the lowest logical level. Attributes are assigned at the highest logical level. Subtypes at the higher lever in the hierarchy inherit attributes only from their immediate subtype. Subtypes at the lower lever in the hierarchy inherit attributes only from their immediate supertype. 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 action assertion must include which of the following? Action All of these Corresponding object Anchor object Action All of these Corresponding object Anchor object 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. True False True False ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules Which of the following statements concerning business rules is true? All of these It should not be convertible to computer code. It may include restrictions. It should be complex. All of these It should not be convertible to computer code. It may include restrictions. It should be complex. ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules An oval represents which of the following in an EER? Optional One Attribute Entity Relationship Optional One Attribute Entity Relationship ANSWER DOWNLOAD EXAMIANS APP
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