Database Systems: Design, Implementation, & Management
Database Systems: Design, Implementation, & Management
12th Edition
ISBN: 9781305627482
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Chapter 5, Problem 9RQ
Program Plan Intro

Subtype:

  • Subtype is one type of entity which inherits the attributes from a different entity.
  • The subtype relationship is a grouping of entities type in single entity that shares the common attributes or relationships which are different from other grouping.
  • It 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.

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