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Specialization is which of the following processes?

  • A.Defining one or more subtypes of the supertype and forming supertype/subtype relationships.
  • B.Defining one or more supertypes of the subtype and forming supertype/subtype relationships.
  • C.Defining one or more subtypes of the supertype and not forming supertype/subtype relationships.
  • D.Defining one or more supertypes of the subtype and not forming supertype/subtype relationships.

Answer: A

Correct answer: Defining one or more subtypes of the supertype and forming supertype/subtype relationships.

Specialisation works downward from the general to the particular: an existing entity type is examined, distinct subgroupings are identified, and subtypes are created and linked to it. Generalisation is the reverse process, starting from several specific entity types and abstracting a common supertype from them.

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