The following is the DDL script to create tables and relationships for the course management example:

-- MySQL Script generated by MySQL Workbench 
-- Sun Mar  8 18:17:07 2015 
-- Model: New Model    Version: 1.0 
-- MySQL Workbench Forward Engineering 
 
SET @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='TRADITIONAL,ALLOW_INVALID_DATES'; 
 
-- ----------------------------------------------------- 
-- Schema course_management 
-- ----------------------------------------------------- 
DROP SCHEMA IF EXISTS `course_management` ; 
 
-- ----------------------------------------------------- 
-- Schema course_management 
-- ----------------------------------------------------- 
CREATE SCHEMA IF NOT EXISTS `course_management` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci ; 
USE `course_management` ; 
 
-- ----------------------------------------------------- 
-- Table `course_management`.`Teacher` 
-- ----------------------------------------------------- 
DROP TABLE IF EXISTS `course_management`.`Teacher` ; 
 
CREATE TABLE IF NOT EXISTS `course_management`.`Teacher` ( 
  `id` INT NOT NULL AUTO_INCREMENT, 
  `first_name` VARCHAR(45) NOT NULL, 
  `last_name` VARCHAR(45) NULL, 
  `designation` VARCHAR(45) NOT NULL, 
  PRIMARY KEY (`id`)) 
ENGINE = InnoDB; 
 
 
-- ----------------------------------------------------- 
-- Table `course_management`.`Course` 
-- ----------------------------------------------------- 
DROP TABLE IF EXISTS `course_management`.`Course` ; 
 
CREATE TABLE IF NOT EXISTS `course_management`.`Course` ( 
  `id` INT NOT NULL AUTO_INCREMENT, 
  `name` VARCHAR(45) NOT NULL, 
  `credits` INT NOT NULL, 
  `Teacher_id` INT NULL, 
  PRIMARY KEY (`id`), 
  INDEX `fk_Course_Teacher_idx` (`Teacher_id` ASC), 
  CONSTRAINT `fk_Course_Teacher` 
    FOREIGN KEY (`Teacher_id`) 
    REFERENCES `course_management`.`Teacher` (`id`) 
    ON DELETE NO ACTION 
    ON UPDATE NO ACTION) 
ENGINE = InnoDB; 
 
 
-- ----------------------------------------------------- 
-- Table `course_management`.`Student` 
-- ----------------------------------------------------- 
DROP TABLE IF EXISTS `course_management`.`Student` ; 
 
CREATE TABLE IF NOT EXISTS `course_management`.`Student` ( 
  `id` INT NOT NULL AUTO_INCREMENT, 
  `first_name` VARCHAR(45) NOT NULL, 
  `last_name` VARCHAR(45) NULL, 
  `enrolled_since` MEDIUMTEXT NOT NULL, 
  PRIMARY KEY (`id`)) 
ENGINE = InnoDB; 
 
 
-- ----------------------------------------------------- 
-- Table `course_management`.`Course_Student` 
-- ----------------------------------------------------- 
DROP TABLE IF EXISTS `course_management`.`Course_Student` ; 
 
CREATE TABLE IF NOT EXISTS `course_management`.`Course_Student` ( 
  `Course_id` INT NOT NULL, 
  `Student_id` INT NOT NULL, 
  PRIMARY KEY (`Course_id`, `Student_id`), 
  INDEX `fk_Course_has_Student_Student1_idx` (`Student_id` ASC), 
  INDEX `fk_Course_has_Student_Course1_idx` (`Course_id` ASC), 
  CONSTRAINT `fk_Course_has_Student_Course1` 
    FOREIGN KEY (`Course_id`) 
    REFERENCES `course_management`.`Course` (`id`) 
    ON DELETE NO ACTION 
    ON UPDATE NO ACTION, 
  CONSTRAINT `fk_Course_has_Student_Student1` 
    FOREIGN KEY (`Student_id`) 
    REFERENCES `course_management`.`Student` (`id`) 
    ON DELETE NO ACTION 
    ON 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;