ER Model and Business Rules Which of the following statements concerning business rules is true? It may include restrictions. It should not be convertible to computer code. All of these It should be complex. It may include restrictions. It should not be convertible to computer code. All of these It should be complex. ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules A supertype/subtype hierarchy is which of the following? Each supertype has only one subtype. Each subtype has only one attribute. Each supertype has only one attribute. Each subtype has only one supertype. Each supertype has only one subtype. Each subtype has only one attribute. Each supertype has only one attribute. Each subtype has only one supertype. ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules Use of a supertype/subtype relationship is necessary when which of the following exists? An instance of a subtype participates in a relationship that is the same as the other subtypes. 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. Attributes apply to all of the instances of an entity type. An instance of a subtype participates in a relationship that is the same as the other subtypes. 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. Attributes apply to all of the instances of an entity type. 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? A singular noun All of these Concise Specific to the organization A singular noun All of these Concise Specific to the organization 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. 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. Subtypes at the lower lever in the hierarchy inherit attributes only from their immediate supertype. ANSWER DOWNLOAD EXAMIANS APP
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