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ER Model and Business Rules
A supertype/subtype hierarchy is which of the following?
Each subtype has only one attribute.
Each supertype has only one attribute.
Each subtype has only one supertype.
Each supertype has only one subtype.
Correct Answer:
Each subtype has only one supertype.
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More Questions from
ER Model and Business Rules
A subtype discriminator is which of the following?
Use of a supertype/subtype relationship is necessary when which of the following exists?
Inheritance is which of the following?
When an entity instance must be a member of only one subtype, it is which of the following?
A rectangle represents which of the following in an EER?
Specialization is which of the following processes?
Which of the following statements concerning business rules is true?
Overlapping and disjoint subtypes have different approaches on how the subtype discriminator is applied.
There is cardinality on an EER between the supertype and subtype.
A supertype is an entity type that shares common attributes or relationships distinct from other subgroupings.
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