A relationship between entity supertype and entity subtype is known as _______. Partial participation relationship IS-A relationship M : N relationship Total participation relationship

Answered: relationship between entity supertype…

Engineering

Computer Science

relationship between entity supertype and entity subtype is known as _______. Partial participation relationship

Oracle 12c: SQL

3rd Edition

ISBN:9781305251038

Author:Joan Casteel

Publisher:Joan Casteel

Chapter1: Overview Of Database Concepts

Section: Chapter Questions

Problem 3MC

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Concept explainers

Enhanced ER Model

The enhanced ER model is an abbreviation for Enhanced Entity-Relationship (EER) model. As you know, the entity-relationship (ER) model is a pictorial illustration of the relationship between various entities of a domain. In the case of a large amount of data with multiple interrelated entities, the ER diagrams become complex and tough to interpret. For such cases, the need for enhancement in the ER model was observed, and thus, the EER model was designed.

Question

A relationship between entity supertype and entity subtype is known as _______.

		Partial participation relationship
		IS-A relationship
		M : N relationship
		Total participation relationship

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