phpmyadmin Ondelete cascade not working - mysql

Question

I have Three tables 1) product, 2)product_x, 3) product_y. I have set primary key for these three tables. The tables are
1) product : id, name, product_type, created_at
2) product_x : id, product_id,description, created_at
3) product_y : id,product_id,description, created_at
The product_id table in the product_x and product_y tables are foreign reference from the table product. If product_type is=1 entry will go to product_x and if product_type=0 entry will go to product_1. SO here my problem is i have set delete on cascade for the foreign key reference for these two tables. But when i delete an entry from product_x or product_y the corresponding id from the product table is not deleted. That means delete on cascade in not working. I need help from you guys, Please help.
Here is my product table.
--
-- Table structure for table `product`
--
CREATE TABLE IF NOT EXISTS `product` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(100) NOT NULL,
`code` varchar(100) NOT NULL,
`description` text NOT NULL,
`product_type` tinyint(4) NOT NULL COMMENT '1=pronova product,2=doctor product',
`ingredients` varchar(200) NOT NULL,
`directions` varchar(200) NOT NULL,
`status` tinyint(1) NOT NULL COMMENT '0=inactive,1=active',
`created_at` datetime NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=67 ;
my product_x table
--
-- Table structure for table product_x
CREATE TABLE IF NOT EXISTS `product_x` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`inventory_id` int(11) NOT NULL,
`doctor_id` int(11) NOT NULL,
`stock` varchar(20) NOT NULL,
`image` varchar(50) NOT NULL,
`small_image` varchar(100) NOT NULL,
`sail_price` float DEFAULT NULL,
`acquire_price` float DEFAULT NULL,
`created_at` datetime NOT NULL,
PRIMARY KEY (`id`),
KEY `product_id` (`product`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=5 ;
and my product_y table is
CREATE TABLE IF NOT EXISTS `product_y` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`inventory_id` int(11) NOT NULL,
`specialization_type` int(11) NOT NULL,
`stock` varchar(20) NOT NULL,
`image` varchar(100) NOT NULL,
`unit_credit_value` int(11) NOT NULL,
`suggested_price` float NOT NULL,
`list_price` float DEFAULT NULL COMMENT 'the price which this product sold if pronova sold this',
`created_at` datetime NOT NULL,
PRIMARY KEY (`id`),
KEY `inventory_id` (`product`),
KEY `FK50E07CF68B1B2BCE` (`inventory_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=6 ;

Answer 1

Check to make sure that you are using InnoDB and not MyISAM, if you really don't have control over it, you could write a trigger as explained below:
How to use delete cascade on MySQL MyISAM storage engine?