my sql中如何键主外键

my sql中怎么键主外键？
my sql中怎么键主外键？

[解决办法]

SQL code

Create Table: CREATE TABLE `ibtest11c` (  `A` int(11) NOT NULL auto_increment,  `D` int(11) NOT NULL default '0',  `B` varchar(200) NOT NULL default '',  `C` varchar(175) default NULL,  PRIMARY KEY  (`A`,`D`,`B`),  KEY `B` (`B`,`C`),  KEY `C` (`C`),  CONSTRAINT `0_38775` FOREIGN KEY (`A`, `D`)REFERENCES `ibtest11a` (`A`, `D`)ON DELETE CASCADE ON UPDATE CASCADE,  CONSTRAINT `0_38776` FOREIGN KEY (`B`, `C`)REFERENCES `ibtest11a` (`B`, `C`)ON DELETE CASCADE ON UPDATE CASCADE) ENGINE=INNODB CHARSET=latin1