Given the following entities, which of the choices below would be the most complicated? Show
Automobile: VIN, EngineSize, NumberOfDoors, NumberOfPassengers, FuelType, Transmission SUV: VIN, EngineSize, NumberOfPassengers, NoWheelDrive, FuelType, Transmission Truck: VIN, EngineSize, NoWheelDrive, FuelType, Transmission, Payload Which of the following is a generic entity type that has a relationship with one or more subtypes? Given the following entities, which of the choices below would be the most complicated? Automobile: VIN, EngineSize, NumberOfDoors,
NumberOfPassengers, FuelType, Transmission Define one vehicle entity type to hold all entities. The property by which subtype entities possess the values of all attributes of a supertype is called: Subtypes should be used when: there are attributes that apply to some but not all instances of an entity type. The process of defining one or more subtypes of a supertype and forming relationships is called: The process of defining a more general entity type from a set of more specialized entity types is called: Which of the following is a completeness constraint? The ________ rule specifies that an entity instance of a supertype is allowed not to belong to any subtype. The ________ rule specifies that each entity instance of the supertype must be a member of some subtype in the relationship. A ________ constraint is a type of constraint that addresses whether an instance of a supertype must also be an instance of at least one subtype. The ________ rule specifies that an entity can be a member of only one subtype at a time. A ________ addresses whether an instance of a supertype may simultaneously be a member of two or more subtypes. disjointedness constraint Which of the following specifies that an entity instance of the supertype does not have to belong to any subtype?Partial specialization rule
Specifies that an entity instance of the supertype is allowed not to belong to any subtype.
Is the rule that specifies that an entity instance of a supertype may not simultaneously be a member of two or more subtypes?Disjoint rule. Specifies that if an entity instance (of the supertype) is a member of one subtype, it cannot simultaneously be a member of two (or more) subtypes. Overlap rule. Specifies that an entity instance can simultaneously be a member of two (or more) subtypes.
Is an instance of the supertype could be more than one of the subtypes?instance of a supertype may simultaneously instance of a supertype may simultaneously be a member of two (or more) subtypes. A bank has three types of accounts: checking, savings, and loan. Assume that each bank account must be a member of exactly one of these subtypes.
What type of constraints in Supertype that an instance of a supertype may simultaneously be a member of two or more subtypes?Disjointness Constraints: Whether an instance of a supertype may simultaneously be a member of two (or more) subtypes.
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Which of the following rules specifies that each entity instance of the supertype Cannot be a member of more than one the subtypes simultaneously in the relationship?
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