简单图像上传系统的Sql关系

Question

我正在创建一个简单的图片上传系统，该系统使用四个表user，likes，images和comments，用户可以在其中上传，例如和留言。我在mysql workbench创建了我的表格，我的一张表格（计算了评论和图片的喜欢数量）与one-to-many和{{images的关系comments 1}}。我的问题是如何正确处理这个问题？或者我应该删除likes表并将like_count列放在images和comments表中？如何解决likes，images和comments问题之间的这种关系？

用户表

CREATE TABLE IF NOT EXISTS `my_db`.`users` (
  `user_id` INT NOT NULL AUTO_INCREMENT,
  `user_name` VARCHAR(255) NOT NULL,
  `user_email` VARCHAR(60) NOT NULL,
  `user_passwd` VARCHAR(255) NOT NULL,
  `activated` VARCHAR(255) NOT NULL,
  `user_registered` DATETIME NOT NULL,
  `reset` VARCHAR(255) NULL DEFAULT NULL,
  `users_pic` VARCHAR(255) NULL,
  PRIMARY KEY (`user_id`),
  UNIQUE INDEX `user_name_UNIQUE` (`user_name` ASC),
  UNIQUE INDEX `user_email_UNIQUE` (`user_email` ASC))
ENGINE = InnoDB;

图片表。

CREATE TABLE IF NOT EXISTS `my_db`.`images` (
  `image_id` INT NOT NULL AUTO_INCREMENT,
  `users_user_id` INT NOT NULL,
  `image_created` DATETIME NOT NULL,
  PRIMARY KEY (`image_id`, `users_user_id`),
  INDEX `fk_images_users_idx` (`users_user_id` ASC),
  CONSTRAINT `fk_images_users`
    FOREIGN KEY (`users_user_id`)
    REFERENCES `my_db`.`users` (`user_id`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;

评论表

CREATE TABLE IF NOT EXISTS `my_db`.`comments` (
  `comment_id` INT NOT NULL AUTO_INCREMENT,
  `images_image_id` INT NOT NULL,
  `images_users_user_id` INT NOT NULL,
  `comment` VARCHAR(500) NULL,
  `comment_created` DATETIME NOT NULL,
  PRIMARY KEY (`comment_id`, `images_image_id`, `images_users_user_id`),
  INDEX `fk_comments_images1_idx` (`images_image_id` ASC, `images_users_user_id` ASC),
  CONSTRAINT `fk_comments_images1`
    FOREIGN KEY (`images_image_id` , `images_users_user_id`)
    REFERENCES `my_db`.`images` (`image_id` , `users_user_id`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;

喜欢桌子

CREATE TABLE IF NOT EXISTS `my_db`.`likes` (
  `like_id` INT NOT NULL AUTO_INCREMENT,
  `like_count` INT NOT NULL DEFAULT 0,
  `like_dislike` INT NOT NULL DEFAULT 0,
  `images_image_id` INT NOT NULL,
  `images_users_user_id` INT NOT NULL,
  `comments_comment_id` INT NOT NULL,
  `comments_images_image_id` INT NOT NULL,
  `comments_images_users_user_id` INT NOT NULL,
  PRIMARY KEY (`like_id`, `images_image_id`, `images_users_user_id`, `comments_comment_id`, `comments_images_image_id`, `comments_images_users_user_id`),
  INDEX `fk_likes_images1_idx` (`images_image_id` ASC, `images_users_user_id` ASC),
  INDEX `fk_likes_comments1_idx` (`comments_comment_id` ASC, `comments_images_image_id` ASC, `comments_images_users_user_id` ASC),
  CONSTRAINT `fk_likes_images1`
    FOREIGN KEY (`images_image_id` , `images_users_user_id`)
    REFERENCES `my_db`.`images` (`image_id` , `users_user_id`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fk_likes_comments1`
    FOREIGN KEY (`comments_comment_id` , `comments_images_image_id` , `comments_images_users_user_id`)
    REFERENCES `my_db`.`comments` (`comment_id` , `images_image_id` , `images_users_user_id`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
 ENGINE = InnoDB;