Here are two ER diagrams which separately depicts the library management system and shopping mall management system. Each of the two displays the structure and relationships between different entities involved in the system. For instance, entities like book, publisher, member are represented as rectangles, and attributes are represented as circles around the entity rectangles in the first ERD. This kind of diagram helps to provide a clear and accurate representation of the database structure, facilitating communication among stakeholders and ensuring that the final product meets the needs and expectations of users.
