What Is Entity Relationship Diagram ( ERD ) ?
ER Model Explained In DBMS - Database Management System.

एंटिटी रिलेशनशिप डायग्राम , Diagramme entité-relation , كيان الرسم العلاقة , 實體關係圖 , अस्तित्व संबंध आकृती,
Диаграмма отношений сущностей, Diagramma delle relazioni tra entità

Welcome to learn computer science online dot com and in this video we are going to discuss what is entity relationship diagram , different components of entity relationship diagram and how it is used in the database management system DBMS.

We will also discuss in detail various symbols used in the ER diagram , its meaning , concept of entity , relationship , cardinality, and, other related important topics.
Let us first start with a quick introduction to the ER Model.
The Entity Relationship Diagram ERD is a graphical representation of the database structure.
The Entity Relationship Diagram is also alternately referred to as ER Model, or ER Diagram.
In simple words , the entity relationship diagram is a blueprint that can used to create a database using a specific database management system RDBMS.
We can compare this, with architectural drawings.
An architect create blueprints, before building a house .
Similarly , the database designers create different types of data models or database blueprints to visualize the database structure.
During the database design stage the database designers prepare various data models to visualize the database structure.

The E R model is one of the data model called as conceptual data model used by the database designers to describe the database.


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What Is Entity Relationship Diagram ?

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#EntityRelationshipDiagram , #ERModel , #ERD , #DataModelling