 # Dump of table feedbacks
 # ------------------------------------------------------------
 
-DROP TABLE IF EXISTS `feedbacks`;
-
-CREATE TABLE `feedbacks` (
+CREATE TABLE IF NOT EXISTS `feedbacks` (
   `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
   `article_id` bigint(20) unsigned NOT NULL,
   `user_id` bigint(20) unsigned NOT NULL,

# Dump of table user_groups
# ------------------------------------------------------------

DROP TABLE IF EXISTS `user_groups`;

CREATE TABLE `user_groups` (
  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `name` varchar(32) COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT '',
  `description` text COLLATE utf8mb4_unicode_ci,

# Dump of table reviews
# ------------------------------------------------------------

CREATE TABLE IF NOT EXISTS `reviews` (
  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `article_id` bigint(20) unsigned NOT NULL,
  `user_id` bigint(20) unsigned NOT NULL,
