Database Concepts (7th Edition)
Database Concepts (7th Edition)
7th Edition
ISBN: 9780133544626
Author: David M. Kroenke, David J. Auer
Publisher: PEARSON
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Chapter 4, Problem 4.2RQ

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Data model:

A data model is a logical representation of a database. The structure of data model includes the relationship, content, and constraints that determine how data can be stored and accessed. The data model is transformed into a database design.

The data model can be divided into three types:

  • Object based data model.
  • Physical data model.
  • Record based data model.

Object based data model:

The concepts of entities, attributes, and relationships are used in the object oriented data model.

Physical data model:

This data model describes how data stored in the computer memory...

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