Online shopping system:

Rebuild View/Edit cart and checkout pages using PL/SQL like the following:

Create a function/procedure to update the quantity of the product in the cart if the new quantity is available in the store. Don't forget to update the available quantity in the store. Create a trigger that deletes the product from the cart after updating the quantity to 0. Create a trigger that empties the customer cart after the customer clicks on the checkout. Import the database and submit it with PHP pages after rebuilding.