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Foreign Keys usage???
Posted by: it99ama ()
Date: August 18, 2004 05:18AM

I'm trying to make a foreign key relation between two tables but it doesn't seem to work!
#-------------------------------------
CREATE TABLE operation (
operationID int(11) NOT NULL AUTO_INCREMENT,
name varchar(50) default NULL,
PRIMARY KEY (OperationID)
);

#---
CREATE TABLE agent (
agentID int(11) NOT NULL AUTO_INCREMENT,
name varchar(50) default NULL,
operationID int(11) default NULL,
PRIMARY KEY (agentID),
FOREIGN KEY (operationID) REFERENCES operation (operationID)
);
#----------------------------------------------------

Then when i do an insert like:
INSERT INTO operation VALUES(1,'Newbiemission');
INSERT INTO agent VALUES(' ','Newbie',2);

This should cause an error!?? But it doesn't!
The number '2' inserted into the 'agent' table should cause an error because of the FK!!

What am I doing wrong?

/Andy





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Subject Written By Posted
Foreign Keys usage??? it99ama 08/18/2004 05:18AM
Re: Foreign Keys usage??? it99ama 08/18/2004 06:00AM
Re: Foreign Keys usage??? Ramalingam Chelliah 08/18/2004 06:22AM
Re: Foreign Keys usage??? it99ama 08/18/2004 08:28AM


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