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docs/DB.md

@@ -33,8 +33,8 @@ USE e949;
 CREATE TABLE users (
 	id INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY COMMENT 'Unique identifier of user',
 	created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 'When account was created',
-	login VARCHAR(255) NOT NULL COMMENT 'User login',
-	email VARCHAR(255) NULL COMMENT 'User e-mail address',
+	login VARCHAR(255) NOT NULL UNIQUE COMMENT 'User login',
+	email VARCHAR(255) NULL UNIQUE COMMENT 'User e-mail address',
 	password_hash BINARY(32) NOT NULL COMMENT 'User password hash',
 	salt VARCHAR(8) NOT NULL COMMENT 'User salt, used for password hash',
 	avatar_path VARCHAR(255) NULL COMMENT 'Path or URL to avatar picture',
@@ -78,7 +78,9 @@ CREATE TABLE invites (
 	uses_last SMALLINT UNSIGNED NOT NULL COMMENT 'Remaining uses of invite'
 );
 CREATE TABLE approved_tags (
-	value VARCHAR(255) NOT NULL COMMENT 'The tag itself'
+	value VARCHAR(255) NOT NULL UNIQUE COMMENT 'The tag itself',
+	author_id INT UNSIGNED NULL COMMENT 'ID of user who added this tag to list of approved',
+	added_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 'When this tag was added'
 );
 ```