Receipt Based On Database Input

i'm trying to show a message where a user can print after checkout. i have 2 pages, the checkout page and the validate order page, where the checkout page displays a form and the user will fill this page and submit the order, then the order will be stored in the database in a table called Orders where the Order ID is generated automatically, and the date is also stored using the date function.

now what i need is after the order is being stored in the database the validate order will be called to display the message that the order has being received, well i need to add the two fields (Order ID, date) from the Orders table based on this specific order.
How can i do that ?