DROP TABLE IF EXISTS `directory`;
CREATE TABLE `directory` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
  `parent_id` int(11) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

DROP TABLE IF EXISTS `file`;
CREATE TABLE `file` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
  `fk_directory_id` int(11) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

DROP TABLE IF EXISTS `tag`;
CREATE TABLE `tag` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(255) COLLATE utf8_unicode_ci DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

DROP TABLE IF EXISTS `tags_files`;
CREATE TABLE `tags_files` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `fk_file_id` int(11) DEFAULT NULL,
  `fk_tag_id` int(11) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

Infos about images (width/height) are irrelevant. If i need that i'll put it in another table but i don't need images info. What do you think about this db design. What do you think about MyISAM vs InnoDB for specific tables?

Thank you, I appreciate any feedback.

Originally asked by: predrag.music on Stack Overflow