Bundle: Database Systems: Design, Implementation, & Management, 13th + Mindtap Mis, 1 Term (6 Months) Printed Access Card
Bundle: Database Systems: Design, Implementation, & Management, 13th + Mindtap Mis, 1 Term (6 Months) Printed Access Card
13th Edition
ISBN: 9781337745703
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Chapter 5, Problem 3RQ

Explanation of Solution

Specialization hierarchy:

  • The arrangement of higher-level supertypes entity and lower-level subtypes entity is called as specialization hierarchy.
  • The specialization hierarchy is a “is-a” relationship model.
  • It contains many levels of subtype or supertype relationships.
  • Subtype is related to an entity supertype, where the supertype entity has common characteristics and the subtype entity has the unique characteristics of each entity subtype.

Example:

The following example demonstrates specialization hierarchy.

Explanation:

  • Here, “Employee” entity is a “Supertype” entity...

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