ER Model and Business Rules Inheritance is which of the following? When a subtype entity inherits values of another subtype attribute When a supertype entity inherits values of another supertype attribute When a subtype entity inherits values of the supertype attribute When a supertype entity inherits values of the subtype attribute When a subtype entity inherits values of another subtype attribute When a supertype entity inherits values of another supertype attribute When a subtype entity inherits values of the supertype attribute When a supertype entity inherits values of the subtype attribute 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. 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 unique to that subtype. An instance of a subtype participates in a relationship that is the same as the other subtypes. 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 unique to that subtype. 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 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 Specialization is which of the following processes? Defining one or more subtypes of the supertype and forming supertype/subtype relationships. Defining one or more supertypes of the subtype and not forming supertype/subtype relationships. Defining one or more supertypes of the subtype and forming supertype/subtype relationships. Defining one or more subtypes of the supertype and not forming supertype/subtype relationships. Defining one or more subtypes of the supertype and forming supertype/subtype relationships. Defining one or more supertypes of the subtype and not forming supertype/subtype relationships. Defining one or more supertypes of the subtype and forming supertype/subtype relationships. Defining one or more subtypes of the supertype and not forming supertype/subtype relationships. ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules Generalization is the process of defining more general entity types from a set of more specialized entity types. True False True False ANSWER DOWNLOAD EXAMIANS APP
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