Entity-Relationship (ER) Model is based on the notion of real-world entities and relationships among them. While formulating real-world scenario into the database model, the ER Model creates entity set, relationship set, general attributes, and constraints.
ER Model is best used for the conceptual design of a database.
ER Model is based on:
Entities and their attributes.
Relationships among entities.
These concepts are explained below.
https://www.codechief.org/article/entity-relationship-model-in-dbms
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