Database design of Online Shopping System. Schema represents minimal information required to store information of a shop and products to sell. Cart information can be stored in session or if wishlist / watchlist is needed, the schema can be simply extended. Enjoy.

Entities:

users – shop admin, owner and customers
products – products to sell
categories – category of products. eg. laptops, phones etc
orders – customer placed a order
order_details – order always won’t have a single item. store details here.
sales – order is sold.
contact – when customers / visitors contact shop owner

MySQL Create Script / phpMyAdmin dump:
— phpMyAdmin SQL Dump
— version 3.2.0.1
— http://www.phpmyadmin.net
—
— Host: localhost
— Generation Time: Apr 03, 2013 at 07:51 AM
— 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: `smartshop`
—
— ——————————————————–
—
— Table structure for table `category`
—
CREATE TABLE IF NOT EXISTS `category` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(255) NOT NULL,
  `details` text NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM  DEFAULT CHARSET=latin1 AUTO_INCREMENT=4 ;
—
— Dumping data for table `category`
—
INSERT INTO `category` (`id`, `name`, `details`) VALUES
(1, ‘laptops’, ‘laptops lorem ipsum’),
(2, ‘phones’, ‘phones details’),
(3, ‘tablets’, ‘tablets details’);
— ——————————————————–
—
— Table structure for table `contact`
—
CREATE TABLE IF NOT EXISTS `contact` (
  `contact_id` int(11) NOT NULL AUTO_INCREMENT,
  `firstname` varchar(255) NOT NULL,
  `middlename` varchar(255) DEFAULT NULL,
  `lastname` varchar(255) NOT NULL,
  `emai` varchar(255) NOT NULL,
  `message` varchar(255) NOT NULL,
  `created_at` int(11) NOT NULL,
  PRIMARY KEY (`contact_id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;
—
— Dumping data for table `contact`
—

— ——————————————————–
—
— Table structure for table `orders`
—
CREATE TABLE IF NOT EXISTS `orders` (
  `order_id` int(11) NOT NULL AUTO_INCREMENT,
  `user_id` int(11) NOT NULL,
  `shiping_address` varchar(255) DEFAULT NULL,
  `shiping_date` int(11) DEFAULT NULL,
  `shipping_status` varchar(255) DEFAULT NULL,
  `created_at` int(11) NOT NULL,
  PRIMARY KEY (`order_id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;
—
— Dumping data for table `orders`
—

— ——————————————————–
—
— Table structure for table `order_details`
—
CREATE TABLE IF NOT EXISTS `order_details` (
  `order_details_id` int(11) NOT NULL AUTO_INCREMENT,
  `order_id` int(11) NOT NULL,
  `product_id` int(11) NOT NULL,
  `quantity` int(11) NOT NULL,
  PRIMARY KEY (`order_details_id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;
—
— Dumping data for table `order_details`
—

— ——————————————————–
—
— Table structure for table `products`
—
CREATE TABLE IF NOT EXISTS `products` (
  `product_id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(255) NOT NULL,
  `description` text NOT NULL,
  `image` varchar(255) NOT NULL,
  `category_id` int(11) NOT NULL,
  `quantity` varchar(255) NOT NULL,
  `brand` varchar(255) DEFAULT NULL,
  `model` varchar(255) DEFAULT NULL,
  `configuration` varchar(255) DEFAULT NULL,
  `price` varchar(255) NOT NULL,
  `featured` int(11) NOT NULL,
  `created_at` int(11) NOT NULL,
  PRIMARY KEY (`product_id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;
—
— Dumping data for table `products`
—

— ——————————————————–
—
— Table structure for table `sales`
—
CREATE TABLE IF NOT EXISTS `sales` (
  `sales_id` int(11) NOT NULL AUTO_INCREMENT,
  `order_id` int(11) NOT NULL,
  `sales_amount` int(11) NOT NULL,
  `created_at` int(11) NOT NULL,
  PRIMARY KEY (`sales_id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;
—
— Dumping data for table `sales`
—

— ——————————————————–
—
— Table structure for table `users`
—
CREATE TABLE IF NOT EXISTS `users` (
  `user_id` int(11) NOT NULL AUTO_INCREMENT,
  `firstname` varchar(255) NOT NULL,
  `middlename` varchar(255) DEFAULT NULL,
  `lastname` varchar(255) NOT NULL,
  `email` varchar(255) NOT NULL,
  `password` varchar(255) NOT NULL,
  `address` varchar(255) NOT NULL,
  `phone` varchar(255) NOT NULL,
  `type` varchar(255) NOT NULL,
  `created_at` int(11) NOT NULL,
  PRIMARY KEY (`user_id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;
—
— 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 */;