Day-34-Task---MySQL/Entity RelationShip Diagram Code.sql at main · DineshGowthamK/Day-34-Task---MySQL · GitHub

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-- 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='ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION';

-- -----------------------------------------------------
-- Schema mydb
-- -----------------------------------------------------

-- -----------------------------------------------------
-- Schema mydb
-- -----------------------------------------------------
CREATE SCHEMA IF NOT EXISTS `mydb` DEFAULT CHARACTER SET utf8 ;
-- -----------------------------------------------------
-- Schema zenclass
-- -----------------------------------------------------
USE `mydb` ;

-- -----------------------------------------------------
-- Table `mydb`.`users`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`users` (
  `user_id` INT NOT NULL AUTO_INCREMENT,
  `username` VARCHAR(255) NOT NULL,
  `email` VARCHAR(255) NOT NULL,
  `createdAt` DATETIME NOT NULL DEFAULT now(),
  PRIMARY KEY (`user_id`),
  UNIQUE INDEX `user_id_UNIQUE` (`user_id` ASC) VISIBLE)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`students`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`students` (
  `student_id` INT NOT NULL AUTO_INCREMENT,
  `user_id` INT NOT NULL,
  `student_name` VARCHAR(255) NOT NULL,
  `address` VARCHAR(255) NOT NULL,
  `phone_number` VARCHAR(10) NOT NULL,
  `education` TEXT NOT NULL,
  `experience` TEXT NOT NULL,
  PRIMARY KEY (`student_id`),
  UNIQUE INDEX `student_id_UNIQUE` (`student_id` ASC) VISIBLE,
  INDEX `user_id_idx` (`user_id` ASC) VISIBLE,
  CONSTRAINT `user_id`
    FOREIGN KEY (`user_id`)
    REFERENCES `mydb`.`users` (`user_id`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`mentors`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`mentors` (
  `mentor_id` INT NOT NULL AUTO_INCREMENT,
  `user_id` INT NOT NULL,
  `mentor_name` VARCHAR(255) NOT NULL,
  `address` VARCHAR(255) NOT NULL,
  `phone_number` VARCHAR(10) NOT NULL,
  `education` TEXT NOT NULL,
  `experience` TEXT NOT NULL,
  PRIMARY KEY (`mentor_id`),
  UNIQUE INDEX `mentor_id_UNIQUE` (`mentor_id` ASC) VISIBLE,
  INDEX `user_id_idx` (`user_id` ASC) VISIBLE,
  CONSTRAINT `user_id`
    FOREIGN KEY (`user_id`)
    REFERENCES `mydb`.`users` (`user_id`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`topics`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`topics` (
  `topic_id` INT NOT NULL AUTO_INCREMENT,
  `topic_name` VARCHAR(255) NOT NULL,
  `description` TEXT NOT NULL,
  `sessions` INT NOT NULL,
  `mentor_id` INT NOT NULL,
  PRIMARY KEY (`topic_id`),
  UNIQUE INDEX `topic_id_UNIQUE` (`topic_id` ASC) VISIBLE,
  INDEX `mentor_id_idx` (`mentor_id` ASC) VISIBLE,
  CONSTRAINT `mentor_id`
    FOREIGN KEY (`mentor_id`)
    REFERENCES `mydb`.`mentors` (`mentor_id`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`tasks`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`tasks` (
  `task_id` INT NOT NULL,
  `topic_id` INT NOT NULL,
  `task_name` VARCHAR(255) NOT NULL,
  `description` TEXT NOT NULL,
  `deadline` DATE NOT NULL,
  PRIMARY KEY (`task_id`),
  UNIQUE INDEX `task_id_UNIQUE` (`task_id` ASC) VISIBLE,
  INDEX `topic_id_idx` (`topic_id` ASC) VISIBLE,
  CONSTRAINT `topic_id`
    FOREIGN KEY (`topic_id`)
    REFERENCES `mydb`.`topics` (`topic_id`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mydb`.`attendance`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`attendance` (
  `attendance_id` INT NOT NULL,
  `user_id` INT NOT NULL,
  `topic_id` INT NOT NULL,
  `session_date` DATE NOT NULL,
  `status` TINYINT NOT NULL DEFAULT 0,
  PRIMARY KEY (`attendance_id`),
  UNIQUE INDEX `attendance_id_UNIQUE` (`attendance_id` ASC) VISIBLE,
  INDEX `topic_id_idx` (`topic_id` ASC) VISIBLE,
  INDEX `user_id_idx` (`user_id` ASC) VISIBLE,
  CONSTRAINT `topic_id`
    FOREIGN KEY (`topic_id`)
    REFERENCES `mydb`.`topics` (`topic_id`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `user_id`
    FOREIGN KEY (`user_id`)
    REFERENCES `mydb`.`users` (`user_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;