The database design of the online bookstore should include the following components: 1. Item Information Table (Item) -Store the basic information of the item such as title, author, price, description, classification, etc. 2. Order Information Table ( Order) -Store the order information of the customer, including the order number, customer name, order status, order items, etc. 3. Stock-Storage of stock information, including item number, stock quantity, purchase date, supplier, etc. 4. Order Management-used to record all orders created, modified, deleted, and the status of the order (completed, in progress, not processed, etc.). 5. Customer Information Form-used to record the basic information of the customer, such as name, email address, telephone number, etc. 6. The payment information table-used to record all payment methods such as credit card, AliPay, Weixin Pay, etc. 7. The supplier information sheet-used to record the basic information of the supplier, such as company name, address, contact information, etc. The following is a simple online bookstore database design example. The product information table, order information table, and inventory information table already include some basic data fields: ``` --Item Information Form (Product) CREATE TABLE Product ( Product_ID INT PRIMARY KEY Product_Name VARCHAR(50) NOT NULL Product_Price DECIMAL(10 2) NOT NULL Product_Description TEXT NOT NULL Product_category VARCHAR(20) NOT NULL FOREIGN KEY (Product_ID) REFERENCES Product(ID) ); --Order Information Form (Order) CREATE TABLE Order ( Order_ID INT PRIMARY KEY Customer_Name VARCHAR(50) NOT NULL Order_Status VARCHAR(20) NOT NULL Order_Product VARCHAR(50) NOT NULL Order_Time TIMESTAMP NOT NULL FOREIGN KEY (Order_ID) REFERENCES Order(ID) ); --Storage Information Form (Stock) CREATE TABLE Stock ( Stock_ID INT PRIMARY KEY _ Arrival_Date Date NOT Empty <strong></strong><strong></strong> FOREIGN KEY (Stock_ID) REFERENCES Stock(ID) ); --Order Management CREATE TABLE Order Management ( Order_ID INT NOT NULL Order_'s status VarCHAR(20) NOT nil Order_'s method VARCHAR(20) NOT nil FOREIGN KEY (Order_ID) REFERENCES Order(ID) ); --Customer Information Form CREATE TABLE Customer ( Customer_ID INT NOT NULL Customer_Name VARCHAR(50) NOT NULL Customer_Email VARCHAR(100) NOT NULL Customer_Phone VARCHAR(20) NOT NULL FOREIGN KEY (Customer_ID) REFERENCES Customer(ID) ); --payment information form (Payment) CREATE TABLE Payment ( Payment_ID INT NOT NULL Payment_Name VARCHAR(50) NOT NULL Payment_Type VARCHAR(20) NOT NULL Payment_Time TIMESTAMP NOT NULL FOREIGN KEY (Payment_ID) REFERENCES Payment(ID) ); ``` In the above design, each table has a unique ID as the primary key to ensure the uniqueness and integrity of the data. At the same time, in order to support multi-currency transactions, the payment information table also included a payment type field to distinguish different payment methods.