Quiz System–Database Schema Design

MySQL Database Schema design for quiz system.

Schema Diagram:

MySQL Create Script:

-- phpMyAdmin SQL Dump
-- version 3.2.0.1
-- http://www.phpmyadmin.net
--
-- Host: localhost
-- Generation Time: Apr 01, 2013 at 08:27 PM
-- Server version: 5.1.37
-- PHP Version: 5.3.0

SET SQL_MODE="NO_AUTO_VALUE_ON_ZERO";

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;

--
-- Database: `quiz`
--

-- --------------------------------------------------------

--
-- Table structure for table `category`
--

CREATE TABLE IF NOT EXISTS `category` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(255) CHARACTER SET utf8 NOT NULL,
  `slug` varchar(255) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;

--
-- Dumping data for table `category`
--

-- --------------------------------------------------------

--
-- Table structure for table `level`
--

CREATE TABLE IF NOT EXISTS `level` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(255) NOT NULL,
  `slug` varchar(255) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;

--
-- Dumping data for table `level`
--

-- --------------------------------------------------------

--
-- Table structure for table `questions`
--

CREATE TABLE IF NOT EXISTS `questions` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `question` text CHARACTER SET utf8 NOT NULL,
  `option1` varchar(255) NOT NULL,
  `option2` varchar(255) NOT NULL,
  `option3` varchar(255) NOT NULL,
  `option4` varchar(255) NOT NULL,
  `answer` varchar(255) NOT NULL,
  `category_id` int(11) NOT NULL,
  `level_id` int(11) NOT NULL,
  `image` varchar(255) DEFAULT NULL,
  `status` int(11) NOT NULL DEFAULT '0',
  PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;

--
-- Dumping data for table `questions`
--

-- --------------------------------------------------------

--
-- Table structure for table `score`
--

CREATE TABLE IF NOT EXISTS `score` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `user_id` int(11) NOT NULL,
  `question_id` int(11) NOT NULL,
  `category_id` int(11) NOT NULL,
  `level_id` int(11) NOT NULL,
  `user_answer` varchar(255) NOT NULL,
  `is_correct` int(11) NOT NULL,
  `points` int(11) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;

--
-- Dumping data for table `score`
--

-- --------------------------------------------------------

--
-- Table structure for table `settings`
--

CREATE TABLE IF NOT EXISTS `settings` (
  `points_per_question` int(11) NOT NULL,
  `site_name` varchar(255) NOT NULL,
  `site_slogan` varchar(255) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

--
-- Dumping data for table `settings`
--

-- --------------------------------------------------------

--
-- Table structure for table `users`
--

CREATE TABLE IF NOT EXISTS `users` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `username` varchar(255) NOT NULL,
  `password` varchar(255) NOT NULL,
  `email` varchar(255) NOT NULL,
  `created_at` int(11) NOT NULL,
  `image` varchar(255) DEFAULT NULL,
  `about` text CHARACTER SET utf8,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM  DEFAULT CHARSET=latin1 AUTO_INCREMENT=73 ;

--
-- Dumping data for table `users`
--

/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;