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
ER Model and Business Rules An entity cluster is a set of one or more entity types and associated relationships. False True False True ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules A subtype entity name should be which of the following? Specific to the organization A singular noun All of these Concise Specific to the organization A singular noun All of these Concise ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules There is cardinality on an EER between the supertype and subtype. True False True False ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules Use of a supertype/subtype relationship is necessary when which of the following exists? No attributes apply to any of the instances of an entity type. An instance of a subtype participates in a relationship that is the same as the other subtypes. Attributes apply to all of the instances of an entity type. An instance of a subtype participates in a relationship that is unique to that subtype. No attributes apply to any of the instances of an entity type. An instance of a subtype participates in a relationship that is the same as the other subtypes. Attributes apply to all of the instances of an entity type. An instance of a subtype participates in a relationship that is unique to that subtype. ANSWER DOWNLOAD EXAMIANS APP
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
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