This College Library Management ER Diagram, also known as an Entity-Relationship Diagram, is used to analyze the database's structure. It depicts the connections between entities and their attributes. An ER Model facilitates communication. The ER Diagram for College Library Management System reveals the relationships between college library entity sets in a database. The logical structure of databases is shown here. It is accomplished by identifying entities, their properties, and their interactions. ER diagrams are used to design the College Library Management System database. This database design for a college library management system consists of entities, attributes, and relationships.