[resolved] Error with foreign keys

[Anonymous]

Hi,
i have a multiple table database, some linked with a foreign key that is not implemented yet.
I tried to add the foreign key with an old topic found on this forum, using a tMysqlRow, then i added the clause "ALTER TABLE my_table ADD FOREIGN KEY (idKey) REFERENCES my_other_table(idKey) .
But it didn't work , no error found but no entries in the table.
So i deleted the component, and made the job as he was before.
But now, when i'm running it, i have this error and i can't get through it

 connecting to socket on port 3547
 connected
Exception in component tMysqlOutput_10
com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Cannot delete or update a parent row: a foreign key constraint fails
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
	at java.lang.reflect.Constructor.newInstance(Unknown Source)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:409)
	at com.mysql.jdbc.Util.getInstance(Util.java:384)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1041)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3566)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3498)
	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1959)
	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2113)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2562)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2512)
 disconnected
	at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:781)
	at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:624)
	at testdatamining.insertionrsaoptim_0_1.insertionRsaOptim.tFileInputPositional_1Process(insertionRsaOptim.java:16092)
	at testdatamining.insertionrsaoptim_0_1.insertionRsaOptim.runJobInTOS(insertionRsaOptim.java:25511)
	at testdatamining.insertionrsaoptim_0_1.insertionRsaOptim.main(insertionRsaOptim.java:25379)
Job insertionRsaOptim terminé à 15:28 09/10/2012. 

What i don't understand, is that i have deleted the tMysqlRow where there was the clause to add the foreign key, so i don't understand how come talend is still on this. I tried to delete/add the concerned component, but it's not working...
You have a printscreen of the job if needed.
If anyone has a lead.. i am taking it.
Thanks for your help.

[Anonymous · Accepted solution]

Ok i found the solution : i had to drop the concerned tables in my database.
Now it's working again.
Any idea on how i can add correctly a foreign key ?