【实验内容及要求】
- 使用画图工具或MySQL Workbench等建模工具设计出相应的ER图,将局部ER图合并为一个整体ER模型,在ER模型中填加多样性约束,建立显示主键的ER模型,标识实体的属性,确认主键、外键。
- 将上述ER图转化为关系模式,要求标出每个关系的主码和外码
- 依据创建的模型,生成SQL语句,在MySQL里创建数据库和表
【实验平台】
Windows MySQL + MySQL Workbench
MySQL Workbench: MySQL
Workbench是为MySQL设计的ER/数据库建模工具。是著名的数据库设计工具DBDesigner4的继任者。具有设计和创建新的数据库图示,建立数据库文档,以及进行复杂的MySQL
迁移的作用
【实验步骤】
-
新建模型
-
为表添加字段和完整性约束
-
导出SQL语句
-
执行SQL语句,产生数据库和表
【实验结果】
- ER模型
- SQL文件
-- MySQL Script generated by MySQL Workbench
-- Mon May 23 15:15:50 2022
-- Model: New Model Version: 1.0
-- MySQL Workbench Forward EngineeringSET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0;
SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0;
SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION';-- -----------------------------------------------------
-- Schema mydb
-- -----------------------------------------------------
DROP SCHEMA IF EXISTS `mydb` ;-- -----------------------------------------------------
-- Schema mydb
-- -----------------------------------------------------
CREATE SCHEMA IF NOT EXISTS `mydb` DEFAULT CHARACTER SET utf8 ;
USE `mydb` ;-- -----------------------------------------------------
-- Table `mydb`.`Customer`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mydb`.`Customer` ;CREATE TABLE IF NOT EXISTS `mydb`.`Customer` (`customerNo` INT NOT NULL,
`customerName` VARCHAR(45) NULL,`customerStreet` VARCHAR(45) NULL,`customerCity` VARCHAR(45) NULL,`customerState` VARCHAR(45) NULL,`customerZipCode` VARCHAR(45) NULL,`custTelNo` VARCHAR(45) NULL,`custFaxNo` VARCHAR(45) NULL,`DOB` VARCHAR(45) NULL,`maritalStatus` VARCHAR(45) NULL,`creditRating` VARCHAR(45) NULL,PRIMARY KEY (`customerNo`))
ENGINE = InnoDB;-- -----------------------------------------------------
-- Table `mydb`.`Employee`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mydb`.`Employee` ;CREATE TABLE IF NOT EXISTS `mydb`.`Employee` (`employeeNo` INT NOT NULL,`title` VARCHAR(45) NULL,`firstName` VARCHAR(45) NULL,`middleName` VARCHAR(45) NULL,`lastName` VARCHAR(45) NULL,`address` VARCHAR(45) NULL,`workTelExt` VARCHAR(45) NULL,`homeTelNo` VARCHAR(45) NULL,`empEmailAddress` VARCHAR(45) NULL,`socialSecurityNumber` VARCHAR(45) NULL,`DOB` VARCHAR(45) NULL,`position` VARCHAR(45) NULL,`sex` VARCHAR(45) NULL,`salary` VARCHAR(45) NULL,`dateStarted` VARCHAR(45) NULL,PRIMARY KEY (`employeeNo`))
ENGINE = InnoDB;-- -----------------------------------------------------
-- Table `mydb`.`PaymentMethod`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mydb`.`PaymentMethod` ;CREATE TABLE IF NOT EXISTS `mydb`.`PaymentMethod` (`pMethodNo` INT NOT NULL,`paymentMethod` VARCHAR(45) NULL,PRIMARY KEY (`pMethodNo`))
ENGINE = InnoDB;-- -----------------------------------------------------
-- Table `mydb`.`Order`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mydb`.`Order` ;
CREATE TABLE IF NOT EXISTS `mydb`.`Order` (`orderNo` INT NOT NULL,`orderDate` VARCHAR(45) NULL,`billingStreet` VARCHAR(45) NULL,`billingCity` VARCHAR(45) NULL,`billingState` VARCHAR(45) NULL,`billingZipCode` VARCHAR(45) NULL,`promisedDate` VARCHAR(45) NULL,`status` VARCHAR(45) NULL,`customerNo` VARCHAR(45) NULL,`employeeNo` VARCHAR(45) NULL,`Invoice_InvoiceNo` INT NOT NULL,`Invoice_PaymentMethod_pMethodNo` INT NOT NULL,`Customer_customerNo` INT NOT NULL,`Employee_employeeNo` INT NOT NULL,PRIMARY KEY (`orderNo`, `Invoice_InvoiceNo`, `Invoice_PaymentMethod_pMethodNo`, `Customer_customerNo`),INDEX `fk_Order_Customer1_idx` (`Customer_customerNo` ASC) VISIBLE,INDEX `fk_Order_Employee1_idx` (`Employee_employeeNo` ASC) VISIBLE,CONSTRAINT `fk_Order_Invoice1`FOREIGN KEY ()REFERENCES `mydb`.`Invoice` ()ON DELETE NO ACTIONON UPDATE NO ACTION,CONSTRAINT `fk_Order_Customer1`FOREIGN KEY (`Customer_customerNo`)REFERENCES `mydb`.`Customer` (`customerNo`)ON DELETE NO ACTIONON UPDATE NO ACTION,CONSTRAINT `fk_Order_Employee1`FOREIGN KEY (`Employee_employeeNo`)REFERENCES `mydb`.`Employee` (`employeeNo`)ON DELETE NO ACTIONON UPDATE NO ACTION)
ENGINE = InnoDB;-- -----------------------------------------------------
-- Table `mydb`.`Invoice`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mydb`.`Invoice` ;CREATE TABLE IF NOT EXISTS `mydb`.`Invoice` (`InvoiceNo` INT NOT NULL,`dateRaised` VARCHAR(45) NULL,`datePaid` VARCHAR(45) NULL,`creditCardNo` VARCHAR(45) NULL,`hodlersName` VARCHAR(45) NULL,`expiryDate` VARCHAR(45) NULL,`orderNo` INT NULL,`pMethodNo` VARCHAR(45) NULL,`PaymentMethod_pMethodNo` INT NOT NULL,PRIMARY KEY (`InvoiceNo`, `PaymentMethod_pMethodNo`),INDEX `fk_Invoice_PaymentMethod_idx` (`PaymentMethod_pMethodNo` ASC) VISIBLE,CONSTRAINT `fk_Invoice_PaymentMethod`FOREIGN KEY (`PaymentMethod_pMethodNo`)REFERENCES `mydb`.`PaymentMethod` (`pMethodNo`)ON DELETE NO ACTIONON UPDATE NO ACTION,CONSTRAINT `orderNo`FOREIGN KEY ()REFERENCES `mydb`.`Order` ()ON DELETE NO ACTIONON UPDATE NO ACTION)
ENGINE = InnoDB;-- -----------------------------------------------------
-- Table `mydb`.`Product`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mydb`.`Product` ;CREATE TABLE IF NOT EXISTS `mydb`.`Product` (`productNo` INT NOT NULL,`productName` VARCHAR(45) NULL,`serialNo` VARCHAR(45) NULL,`unitPrice` VARCHAR(45) NULL,`quantityOnHand` VARCHAR(45) NULL,`reorderLevel` VARCHAR(45) NULL,`reorderQuantity` VARCHAR(45) NULL,`reorderLeadTime` VARCHAR(45) NULL,PRIMARY KEY (`productNo`))
ENGINE = InnoDB;-- -----------------------------------------------------
-- Table `mydb`.`OrderDetail`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mydb`.`OrderDetail` ;CREATE TABLE IF NOT EXISTS `mydb`.`OrderDetail` (`orderNo` INT NOT NULL,`productNo` VARCHAR(45) NULL,`quantityOrdered` VARCHAR(45) NULL,`Product_productNo` INT NOT NULL,`Order_orderNo` INT NOT NULL,`Order_Invoice_InvoiceNo` INT NOT NULL,`Order_Invoice_PaymentMethod_pMethodNo` INT NOT NULL,`Order_Customer_customerNo` INT NOT NULL,PRIMARY KEY (`orderNo`, `Product_productNo`, `Order_orderNo`, `Order_Invoice_InvoiceNo`, `Order_Invoice_PaymentMethod_pMethodNo`, `Order_Customer_customerNo`),INDEX `fk_OrderDetail_Product1_idx` (`Product_productNo` ASC) VISIBLE,INDEX `fk_OrderDetail_Order1_idx` (`Order_orderNo` ASC, `Order_Invoice_InvoiceNo` ASC, `Order_Invoice_PaymentMethod_pMethodNo` ASC, `Order_Customer_customerNo` ASC) VISIBLE,CONSTRAINT `fk_OrderDetail_Product1`FOREIGN KEY (`Product_productNo`)REFERENCES `mydb`.`Product` (`productNo`)ON DELETE NO ACTIONON UPDATE NO ACTION,CONSTRAINT `fk_OrderDetail_Order1`FOREIGN KEY (`Order_orderNo` , `Order_Invoice_InvoiceNo` , `Order_Invoice_PaymentMethod_pMethodNo` , `Order_Customer_customerNo`)REFERENCES `mydb`.`Order` (`orderNo` , `Invoice_InvoiceNo` , `Invoice_PaymentMethod_pMethodNo` , `Customer_customerNo`)ON DELETE NO ACTIONON UPDATE NO ACTION)
ENGINE = InnoDB;-- -----------------------------------------------------
-- Table `mydb`.`ShipmentMethod`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mydb`.`ShipmentMethod` ;CREATE TABLE IF NOT EXISTS `mydb`.`ShipmentMethod` (`sMethodNo` INT NOT NULL,`shipmentMethod` VARCHAR(45) NULL,PRIMARY KEY (`sMethodNo`))
ENGINE = InnoDB;-- -----------------------------------------------------
-- Table `mydb`.`Shipment`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mydb`.`Shipment` ;CREATE TABLE IF NOT EXISTS `mydb`.`Shipment` (`shipmentNo` INT NOT NULL,`quantity` VARCHAR(45) NULL,`shipmentDate` VARCHAR(45) NULL,`completeStatus` VARCHAR(45) NULL,`orderNo` INT NULL,`productNo` VARCHAR(45) NULL,`employeeNo` INT NULL,`sMethodNo` INT NULL,`OrderDetail_orderNo` INT NOT NULL,`OrderDetail_Product_productNo` INT NOT NULL,`OrderDetail_Order_orderNo` INT NOT NULL,`OrderDetail_Order_Invoice_InvoiceNo` INT NOT NULL,`OrderDetail_Order_Invoice_PaymentMethod_pMethodNo` INT NOT NULL,`OrderDetail_Order_Customer_customerNo` INT NOT NULL,`ShipmentMethod_sMethodNo` INT NOT NULL,`Employee_employeeNo` INT NOT NULL,PRIMARY KEY (`shipmentNo`, `OrderDetail_orderNo`, `OrderDetail_Product_productNo`, `OrderDetail_Order_orderNo`, `OrderDetail_Order_Invoice_InvoiceNo`, `OrderDetail_Order_Invoice_PaymentMethod_pMethodNo`, `OrderDetail_Order_Customer_customerNo`, `ShipmentMethod_sMethodNo`),INDEX `fk_Shipment_OrderDetail1_idx` (`OrderDetail_orderNo` ASC, `OrderDetail_Product_productNo` ASC, `OrderDetail_Order_orderNo` ASC, `OrderDetail_Order_Invoice_InvoiceNo` ASC, `OrderDetail_Order_Invoice_PaymentMethod_pMethodNo` ASC, `OrderDetail_Order_Customer_customerNo` ASC, `orderNo` ASC) VISIBLE,INDEX `fk_Shipment_ShipmentMethod1_idx` (`ShipmentMethod_sMethodNo` ASC, `sMethodNo` ASC, `OrderDetail_orderNo` ASC, `OrderDetail_Product_productNo` ASC, `OrderDetail_Order_orderNo` ASC, `OrderDetail_Order_Invoice_InvoiceNo` ASC, `OrderDetail_Order_Invoice_PaymentMethod_pMethodNo` ASC, `OrderDetail_Order_Customer_customerNo` ASC) VISIBLE,INDEX `fk_Shipment_Employee1_idx` (`Employee_employeeNo` ASC) VISIBLE,INDEX `orderNo_idx` (`orderNo` ASC) VISIBLE,CONSTRAINT `orderNo`FOREIGN KEY (`OrderDetail_orderNo` , `OrderDetail_Product_productNo` , `OrderDetail_Order_orderNo` , `OrderDetail_Order_Invoice_InvoiceNo` , `OrderDetail_Order_Invoice_PaymentMethod_pMethodNo` , `OrderDetail_Order_Customer_customerNo` , `orderNo`)REFERENCES `mydb`.`OrderDetail` (`orderNo` , `orderNo` , `orderNo` , `orderNo` , `orderNo` , `orderNo` , `orderNo`)ON DELETE NO ACTIONON UPDATE NO ACTION,CONSTRAINT `sMethodNo`FOREIGN KEY (`ShipmentMethod_sMethodNo` , `sMethodNo` , `OrderDetail_orderNo` , `OrderDetail_Product_productNo` , `OrderDetail_Order_orderNo` , `OrderDetail_Order_Invoice_InvoiceNo` , `OrderDetail_Order_Invoice_PaymentMethod_pMethodNo` , `OrderDetail_Order_Customer_customerNo`)REFERENCES `mydb`.`ShipmentMethod` (`sMethodNo` , `sMethodNo` , `sMethodNo` , `sMethodNo` , `sMethodNo` , `sMethodNo` , `sMethodNo` , `sMethodNo`)ON DELETE NO ACTIONON UPDATE NO ACTION,CONSTRAINT `employeeNo`FOREIGN KEY (`Employee_employeeNo`)REFERENCES `mydb`.`Employee` (`employeeNo`)ON DELETE NO ACTIONON UPDATE NO ACTION,CONSTRAINT `orderNo`FOREIGN KEY (`orderNo`)REFERENCES `mydb`.`OrderDetail` (`orderNo`)ON DELETE NO ACTIONON UPDATE NO ACTION)
ENGINE = InnoDB;SET SQL_MODE=@OLD_SQL_MODE;
SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS;
SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS;