DDL

用户表 (Users)

图书表 (Books)

图书类别表 (BookCategories)

图书与类别关联表 (BookCategoryRelations)

借阅记录表 (BorrowRecords)

供应商表 (Suppliers)

采购记录表 (PurchaseRecords)

CREATE TABLE Users (
    user_id INT PRIMARY KEY AUTO_INCREMENT,
    username VARCHAR(50) NOT NULL UNIQUE,
    password VARCHAR(255) NOT NULL,
    email VARCHAR(100),
    phone VARCHAR(20),
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);
CREATE TABLE Books (
    book_id INT PRIMARY KEY AUTO_INCREMENT,
    title VARCHAR(255) NOT NULL,
    author VARCHAR(100) NOT NULL,
    publisher VARCHAR(100),
    publication_year YEAR,
    ISBN VARCHAR(13) UNIQUE,
    stock_quantity INT NOT NULL DEFAULT 0
);
CREATE TABLE BookCategories (
    category_id INT PRIMARY KEY AUTO_INCREMENT,
    category_name VARCHAR(100) NOT NULL UNIQUE
);
CREATE TABLE `bookcategoryrelations` (
  `relation_id` int(11) NOT NULL AUTO_INCREMENT,
  `book_id` int(11) DEFAULT NULL,
  `category_id` int(11) DEFAULT NULL,
  PRIMARY KEY (`relation_id`),
  UNIQUE KEY `book_id` (`book_id`,`category_id`),
  KEY `bookcategoryrelations_ibfk_2` (`category_id`),
  CONSTRAINT `bookcategoryrelations_ibfk_1` FOREIGN KEY (`book_id`) REFERENCES `books` (`book_id`) ON DELETE NO ACTION ON UPDATE NO ACTION,
  CONSTRAINT `bookcategoryrelations_ibfk_2` FOREIGN KEY (`category_id`) REFERENCES `bookcategories` (`category_id`) ON DELETE NO ACTION ON UPDATE NO ACTION
) ENGINE=InnoDB AUTO_INCREMENT=8 DEFAULT CHARSET=utf8;
);
CREATE TABLE BorrowRecords (
    record_id INT PRIMARY KEY AUTO_INCREMENT,
    user_id INT,
    book_id INT,
    borrow_date DATE NOT NULL,
    return_date DATE,
    FOREIGN KEY (user_id) REFERENCES Users(user_id),
    FOREIGN KEY (book_id) REFERENCES Books(book_id)
);
CREATE TABLE Suppliers (
    supplier_id INT PRIMARY KEY AUTO_INCREMENT,
    supplier_name VARCHAR(100) NOT NULL,
    contact_name VARCHAR(100),
    phone VARCHAR(20),
    email VARCHAR(100)
);
CREATE TABLE `purchaserecords` (
  `record_id` int(11) NOT NULL AUTO_INCREMENT,
  `supplier_id` int(11) DEFAULT NULL,
  `book_id` int(11) DEFAULT NULL,
  `purchase_date` date NOT NULL,
  `quantity` int(11) NOT NULL,
  `price` decimal(10,2) NOT NULL,
  PRIMARY KEY (`record_id`),
  KEY `supplier_id` (`supplier_id`),
  KEY `book_id` (`book_id`),
  CONSTRAINT `purchaserecords_ibfk_1` FOREIGN KEY (`supplier_id`) REFERENCES `suppliers` (`supplier_id`),
  CONSTRAINT `purchaserecords_ibfk_2` FOREIGN KEY (`book_id`) REFERENCES `books` (`book_id`) ON DELETE NO ACTION ON UPDATE NO ACTION
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

DML

INSERT INTO Users (username, password, email, phone)
VALUES ('user1', 'pass1', 'user1@example.com', '1234567890');

INSERT INTO Users (username, password, email, phone)
VALUES ('user2', 'pass2', 'user2@example.com', '0987654321');

INSERT INTO Users (username, password, email, phone)
VALUES ('user3', 'pass3', NULL, '1112223333');

INSERT INTO Users (username, password, email, phone)
VALUES ('user4', 'pass4', 'user4@example.com', NULL);

INSERT INTO Users (username, password, email, phone)
VALUES ('user5', 'pass5', 'user5@example.com', '5556667777');

INSERT INTO Users (username, password, email, phone)
VALUES ('user6', 'pass6', NULL, '9998887777');

INSERT INTO Users (username, password, email, phone)
VALUES ('user7', 'pass7', 'user7@example.com', '7778889999');

INSERT INTO BookCategoryRelations (book_id, category_id)
VALUES (1, 1);

INSERT INTO BookCategoryRelations (book_id, category_id)
VALUES (2, 2);

INSERT INTO BookCategoryRelations (book_id, category_id)
VALUES (3, 3);

INSERT INTO BookCategoryRelations (book_id, category_id)
VALUES (4, 4);

INSERT INTO BookCategoryRelations (book_id, category_id)
VALUES (5, 5);

INSERT INTO BookCategoryRelations (book_id, category_id)
VALUES (6, 6);

INSERT INTO BookCategoryRelations (book_id, category_id)
VALUES (7, 7);


INSERT INTO Books (title, author, publisher, publication_year, ISBN, stock_quantity)
VALUES ('Book 1', 'Author 1', 'Publisher 1', 2020, '1234567890123', 10);

INSERT INTO Books (title, author, publisher, publication_year, ISBN, stock_quantity)
VALUES ('Book 2', 'Author 2', 'Publisher 2', 2019, '2345678901234', 15);

INSERT INTO Books (title, author, publisher, publication_year, ISBN, stock_quantity)
VALUES ('Book 3', 'Author 3', 'Publisher 3', 2021, '3456789012345', 20);

INSERT INTO Books (title, author, publisher, publication_year, ISBN, stock_quantity)
VALUES ('Book 4', 'Author 4', 'Publisher 4', 2018, '4567890123456', 25);

INSERT INTO Books (title, author, publisher, publication_year, ISBN, stock_quantity)
VALUES ('Book 5', 'Author 5', 'Publisher 5', 2022, '5678901234567', 30);

INSERT INTO Books (title, author, publisher, publication_year, ISBN, stock_quantity)
VALUES ('Book 6', 'Author 6', 'Publisher 6', 2023, '6789012345678', 35);

INSERT INTO Books (title, author, publisher, publication_year, ISBN, stock_quantity)
VALUES ('Book 7', 'Author 7', 'Publisher 7', 2024, '7890123456789', 40);

INSERT INTO BookCategories (category_name)
VALUES ('Category 1');

INSERT INTO BookCategories (category_name)
VALUES ('Category 2');

INSERT INTO BookCategories (category_name)
VALUES ('Category 3');

INSERT INTO BookCategories (category_name)
VALUES ('Category 4');

INSERT INTO BookCategories (category_name)
VALUES ('Category 5');

INSERT INTO BookCategories (category_name)
VALUES ('Category 6');

INSERT INTO BookCategories (category_name)
VALUES ('Category 7');

INSERT INTO BorrowRecords (user_id, book_id, borrow_date, return_date)
VALUES (1, 1, '2024-07-01', '2024-07-15');

INSERT INTO BorrowRecords (user_id, book_id, borrow_date, return_date)
VALUES (2, 2, '2024-07-05', '2024-07-20');

INSERT INTO BorrowRecords (user_id, book_id, borrow_date, return_date)
VALUES (3, 3, '2024-07-10', NULL);

INSERT INTO BorrowRecords (user_id, book_id, borrow_date, return_date)
VALUES (4, 4, '2024-07-15', NULL);

INSERT INTO BorrowRecords (user_id, book_id, borrow_date, return_date)
VALUES (5, 5, '2024-07-20', NULL);

INSERT INTO BorrowRecords (user_id, book_id, borrow_date, return_date)
VALUES (6, 6, '2024-07-25', NULL);

INSERT INTO BorrowRecords (user_id, book_id, borrow_date, return_date)
VALUES (7, 7, '2024-07-30', NULL);

INSERT INTO Suppliers (supplier_name, contact_name, phone, email)
VALUES ('Supplier 1', 'Contact 1', '1234567890', 'upplier1@example.com');

INSERT INTO Suppliers (supplier_name, contact_name, phone, email)
VALUES ('Supplier 2', 'Contact 2', '0987654321', 'upplier2@example.com');

INSERT INTO Suppliers (supplier_name, contact_name, phone, email)
VALUES ('Supplier 3', 'Contact 3', '1112223333', 'upplier3@example.com');

INSERT INTO Suppliers (supplier_name, contact_name, phone, email)
VALUES ('Supplier 4', 'Contact 4', '4445556666', 'upplier4@example.com');

INSERT INTO Suppliers (supplier_name, contact_name, phone, email)
VALUES ('Supplier 5', 'Contact 5', '7778889999', 'upplier5@example.com');

INSERT INTO Suppliers (supplier_name, contact_name, phone, email)
VALUES ('Supplier 6', 'Contact 6', '0001112222', 'upplier6@example.com');

INSERT INTO Suppliers (supplier_name, contact_name, phone, email)
VALUES ('Supplier 7', 'Contact 7', '3334445555', 'upplier7@example.com');

INSERT INTO PurchaseRecords (supplier_id, book_id, purchase_date, quantity, price)
VALUES (1, 1, '2024-06-01', 50, 20.00);

INSERT INTO PurchaseRecords (supplier_id, book_id, purchase_date, quantity, price)
VALUES (2, 2, '2024-06-05', 40, 18.00);

INSERT INTO PurchaseRecords (supplier_id, book_id, purchase_date, quantity, price)
VALUES (3, 3, '2024-06-10', 30, 25.00);

INSERT INTO PurchaseRecords (supplier_id, book_id, purchase_date, quantity, price)
VALUES (4, 4, '2024-06-15', 20, 30.00);

INSERT INTO PurchaseRecords (supplier_id, book_id, purchase_date, quantity, price)
VALUES (5, 5, '2024-06-20', 15, 22.00);

INSERT INTO PurchaseRecords (supplier_id, book_id, purchase_date, quantity, price)
VALUES (6, 6, '2024-06-25', 10, 15.00);

INSERT INTO PurchaseRecords (supplier_id, book_id, purchase_date, quantity, price)
VALUES (7, 7, '2024-06-30', 5, 10.00);