Oracle 12c: SQL
Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
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Chapter 1, Problem 1RQ

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Purpose of an E-R model:

  • Entity-Relationship Model (ERM) is used as a high-level logical data model depicted in the form of picture and it contains the information about the business system.
  • The information can be created and stored in the form of ERM diagram.
  • It is used to identify the individual information and the way they are interrelated in the business system.
  • The main purpose of E-R model is to identify the entities about which the database should store data and the relationships among those entities.

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