Как создать таблицы и связи в БД?

CREATE TABLE IF NOT EXISTS `articles` (
  `id` INT(3) NOT NULL AUTO_INCREMENT,
  `caption` VARCHAR(50) COLLATE cp1251_general_cs NOT NULL,
  `description` VARCHAR(255) COLLATE cp1251_general_cs NOT NULL,
  `shot_text` text COLLATE cp1251_general_cs NOT NULL,
  `target` VARCHAR(255) COLLATE cp1251_general_cs NOT NULL,
  `all_text` text COLLATE cp1251_general_cs NOT NULL,
  `add_date` DATE NOT NULL,
  `views` INT(11) NOT NULL,
  `downloads` INT(11) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM  DEFAULT CHARSET=cp1251 COLLATE=cp1251_general_cs AUTO_INCREMENT=1 ;
 
CREATE TABLE IF NOT EXISTS `articles_have` (
  `id` INT(9) NOT NULL AUTO_INCREMENT,
  `art_id` INT(6) NOT NULL,
  `to_have` VARCHAR(255) COLLATE cp1251_general_cs NOT NULL,
  PRIMARY KEY (`id`),
  KEY `art_id` (`art_id`)
) ENGINE=MyISAM DEFAULT CHARSET=cp1251 COLLATE=cp1251_general_cs AUTO_INCREMENT=1 ;
 
CREATE TABLE IF NOT EXISTS `articles_know` (
  `id` INT(9) NOT NULL AUTO_INCREMENT,
  `art_id` INT(6) NOT NULL,
  `to_know` VARCHAR(255) COLLATE cp1251_general_cs NOT NULL,
  PRIMARY KEY (`id`),
  KEY `art_id` (`art_id`)
) ENGINE=MyISAM DEFAULT CHARSET=cp1251 COLLATE=cp1251_general_cs AUTO_INCREMENT=1 ;