connecting multiple profile tables to user table - mysql

Question

I've 3 profile tables:
-student
-teacher
-staff
All profile tables have different columns(few common columns).
These tables must be connected user table, each staff, teacher, student must be having account in user table:
user table
-id
-login
-password
-etc.
What is the best ways of connecting profiles tables to user table.
I've found one solution:
Storing User Profile as properties and values in tables
*i.e. Table to store possible options, table to store user_id, option_id and value*
-No redundant data stored, all data is relevant
-Most normalised method
-Slower to retrieve and update data
updated
Below, I've created db as #user1032531 said.

Answer 1

Create a super table called "people". Put all attributes in this table that are common to students, teachers, and staff.
Then create a table for students, teachers, and staff where each table's primary key is a 1-to-1 to the people table, and put unique attributes in these tables.
-- MySQL Script generated by MySQL Workbench
-- 07/30/14 05:51:12
-- Model: New Model Version: 1.0
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 mydb
-- -----------------------------------------------------
CREATE SCHEMA IF NOT EXISTS `mydb` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci ;
USE `mydb` ;
-- -----------------------------------------------------
-- Table `mydb`.`people`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`people` (
`idpeople` INT UNSIGNED NOT NULL,
`name` VARCHAR(45) NULL,
`birthday` DATE NULL,
`sex` CHAR(1) NULL,
PRIMARY KEY (`idpeople`))
ENGINE = InnoDB;
-- -----------------------------------------------------
-- Table `mydb`.`teachers`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`teachers` (
`people_idpeople` INT UNSIGNED NOT NULL,
`unique_column` VARCHAR(45) NULL,
PRIMARY KEY (`people_idpeople`),
CONSTRAINT `fk_teachers_people`
FOREIGN KEY (`people_idpeople`)
REFERENCES `mydb`.`people` (`idpeople`)
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;
-- -----------------------------------------------------
-- Table `mydb`.`students`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`students` (
`people_idpeople` INT UNSIGNED NOT NULL,
`unique_column` VARCHAR(45) NULL,
PRIMARY KEY (`people_idpeople`),
CONSTRAINT `fk_students_people1`
FOREIGN KEY (`people_idpeople`)
REFERENCES `mydb`.`people` (`idpeople`)
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;
-- -----------------------------------------------------
-- Table `mydb`.`staff`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `mydb`.`staff` (
`people_idpeople` INT UNSIGNED NOT NULL,
`unique_column` VARCHAR(45) NULL,
PRIMARY KEY (`people_idpeople`),
CONSTRAINT `fk_staff_people1`
FOREIGN KEY (`people_idpeople`)
REFERENCES `mydb`.`people` (`idpeople`)
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;