Entity-relationship diagrams (ERDs) are important database design tools. They show a visual map of the different parts of the database, such as tables, columns, and their relationship to each other. Below are some othe ER Diagrams from different Final year projects.
Entity Relationship Diagram of Bank Management System

ER MODEL OF A HOTEL MANAGEMENT DATABASE

Entity-Relationship Diagram for a Library Management System

Entity-Relationship Diagram(ERD) of an E-commerce store
Following is an ERD of an E-commerce store having relations between different entities which are represented respectively.

Entity-Relationship Diagram(ERD) of a Department Management System

Entity-Relationship Diagram(ERD) of Class Attendance System
