9+ the following diagram is an example of a supertype/subtype hierarchy.

We present an example of a supertypesubtype hierarchy in this section in Figure 3-10. In the type hierarchy in Figure 1 sales_rep_t is a subtype of employee_t which is the supertype of sales_rep_t in the same way that person_t is the supertype of employee_tThe following.

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Define each of the following terms.

. The property by which subtype entities possess the values of all attributes of a supertype is called. 1 Each supertype has only one attribute. 65 A subtype can become a supertype if the subtype has other subtypes beneath it.

A subgrouping of the entities in an entity type that is. B Define a separate entity type for each entity. 3 Each subtype has only one supertype.

When a subtype entity inherits values of the supertype attribute. A generic entity type that has a relationship with one or more subtypes b. 3 The property by.

Which of the following is a generic entity type. A subtypes B supertypes C constraints D dimensions 32 The following figure shows a. 67 In a supertypesubtype.

C Define a supertype called vehicle and make each of the entities subtypes. When a supertype entity inherits values of the subtype attribute. In fact this diagram shows most of the sorts of relationships that seem to worry modelers in particular the relationship between an entity class and its own supertype.

2 Each subtype has only one attribute. Study with Quizlet and memorize flashcards containing terms like 1 The property by which subtype entities possess the values of all attributes of a supertype is called. Creating a Generalization Hierarchy The supertype is also assigned an attribute called a discriminator whose values.

66 The following diagram is an example of a supertypesubtype hierarchy. Use of a supertypesubtype relationship is necessary when which of the following exists. Terms in this set 66 The property by which subtype entities possess the values of all attributes of a supertype is called.

Attribute inheritance A subtype is a generic entity that has a relationship with one or. A supertypesubtype hierarchy is which of the following. When a supertype entity inherits values of another.

For simplicity we do not show subtype discriminators in this and most. D Keep only the Truck entity type. How attributes are assigned in a supertype subtype hierarchy.

An instance of a subtype participates in a relationship that is unique to that.

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