I'm trying to make a one to one relationship in a MySQL DB. I'm using the InnoDB engine and the basic table looks like this:

CREATE TABLE `foo` (
  `fooID` INT(11) NOT NULL PRIMARY KEY AUTO_INCREMENT,
  `name` TEXT NOT NULL
)

CREATE TABLE `bar` (
  `barName` VARCHAR(100) NOT NULL,
  `fooID` INT(11) NOT NULL PRIMARY KEY,
  CONSTRAINT `contact` FOREIGN KEY (`fooID`) REFERENCES `foo`(`fooID`)
)

Now once I have set up these I alter the foo table so that the fooID also becomes a foreign key to the fooID in bar. The only issue I am facing with this is that there will be a integrity issue when I try to insert into either. I would like some help, thanks.