The image displays a color-coded entity-relationship diagram (ERD) for a library management system database. The diagram is composed of various entities, each represented by a rectangle containing attributes relevant to that entity. The 'Book' entity has attributes such as 'Book_ID,' 'Title,' 'Author,' 'ISBN,' 'avg_reviews,' 'Genre,' 'Status,' and 'Deposit_Amt.' The 'Customer' entity lists 'Customer_ID,' 'Customer_LName,' 'Customer_FName,' 'Email,' and 'PhoneNum.' These two entities are connected, indicating a relationship between books and customers.
There are also entities for 'Record' and 'Reservation,' both of which link books and customers, including attributes like 'Record_ID,' 'Deposit_Status,' 'Borrow_Date,' 'Expected_ReturnTime,' 'Actual_ReturnTime,' and 'Borrowing_Status' for records, and 'Reservation_ID' and 'Reservation_Status' for reservations. Additionally, a 'Supply' entity is present with 'Supply_ID,' 'Product_Name,' 'Product_Type,' and 'Quantity' attributes. Lastly, the diagram includes an entity for 'ISBN' linked to book details, indicating a separate tracking of stock numbers and book prices. This ERD is a structural blueprint for a database that manages the relationships between books, customers, and transactions within a library.
