the following diagram is an example of a supertype/subtype hierarchy.
36 An entity cluster can be formed by. B Define a separate entity type for each entity.
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62 The following diagram is.
. 68 A subtype can become a supertype if the subtype has other subtypes beneath it. B hierarchical data model. 3 Each subtype has only one supertype.
3 The property by. We present an example of a supertypesubtype hierarchy in this section in Figure 3-10. 1 Each supertype has only one attribute.
61 A subtype can become a supertype if the subtype. 35 The figure below is an example of an. Use of a supertypesubtype relationship is necessary when which of the following exists.
70 In a supertypesubtype. An instance of a subtype participates in a relationship that is unique to that. When a subtype entity inherits values of the supertype attribute.
2 Each subtype has only one attribute. 61 A subtype can become a supertype if the subtype has other subtypes beneath it. C Define a supertype called vehicle and make each of the entities subtypes.
When a supertype entity inherits values of the subtype attribute. For simplicity we do not show subtype discriminators in this and most. 69 The following diagram is an example of a supertypesubtype hierarchy.
A supertypesubtype hierarchy is which of the following. When a supertype entity inherits values of another. D Keep only the Truck entity type.
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