mysql> show create table info1;
+-------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------+
| Table | Create Table                                                                                                                                                                                           
                                                                                   |
+-------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| info1 | CREATE TABLE `info1` (
  `info1_pk` int(10) unsigned NOT NULL,
  `info1_1` varchar(20) DEFAULT NULL,
  `info1_2` varchar(20) DEFAULT NULL,
  PRIMARY KEY (`info1_pk`),
  CONSTRAINT `info1_main` FOREIGN KEY (`info1_pk`) REFERENCES `main` (`pk`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 |
+-------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

mysql> show create table info2;
+-------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table | Create Table                                                                                                                                                                                                                                                                              |
+-------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| info2 | CREATE TABLE `info2` (
  `info2_pk` int(10) unsigned NOT NULL,
  `info2_1` varchar(20) DEFAULT NULL,
  `info2_2` varchar(20) DEFAULT NULL,
  PRIMARY KEY (`info2_pk`),
  CONSTRAINT `info2_main` FOREIGN KEY (`info2_pk`) REFERENCES `main` (`pk`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 |
+-------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)