   `username` varchar(40) NOT NULL,
   `last_update` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
   PRIMARY KEY (`username`)
-) ENGINE=Aria DEFAULT CHARSET=utf8 PAGE_CHECKSUM=1;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8 PAGE_CHECKSUM=1;
 /*!40101 SET character_set_client = @saved_cs_client */;
 
 --

  `username` varchar(40) NOT NULL,
  `topic` varchar(50) NOT NULL,
  UNIQUE KEY `username` (`username`,`topic`)
) ENGINE=Aria DEFAULT CHARSET=utf8 PAGE_CHECKSUM=1;
/*!40101 SET character_set_client = @saved_cs_client */;

--

  `id` int(10) NOT NULL AUTO_INCREMENT,
  `tweet` varchar(140) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 PAGE_CHECKSUM=1;
/*!40101 SET character_set_client = @saved_cs_client */;

--
