Trigger Problem with Master and Detail table relation

[world_php_mysql]

I have a customer master table and customer detail table. The master details relation is purely at the front end level i.e. in the forms of Joomla / PHP where as at the backend level the Foreign key constraints are not defined. I cannot change this pattern due to an existing framework that I am using.

I have written a trigger on the customer detail table as to when a row is inserted in the customer detail table one of the column values in the customer master table needs to be updated. When I am entering data into the detail table the master table value does not get updated but a row is inserted in the detail table which seems to me that the trigger is not fired. But if I do the same thing at the back end i.e. I insert a row in the detail table using PhpMyAdmin the master table values get updated suggesting the trigger is fired.

So is there anything in Joomla that is preventing this to happen?
Please advice.

[world_php_mysql]

Hello All ....

Any solution on this ?
Please suggest