How can I connect excel database to jotform?

I'm trying to built form with prefilled options pulling data from excel file:

i want my users to find the price of the car depending on the year of the car model -> shows only certain make of the car -> shows only that year's models of the make of car selected

at the end it shows the price of the selected year-make-model of the car they select.

from there they continue filling the basic jotform and submit.

Unfortunately, there is no direct way to pre-populate  your form based on data from a database. Currently, you can pre-populate your form's fields with data manually before the form respondent can fill the form.

You can use the Field Prepopulator App to do this.

Or using the URL parameter method of the form. Check this user guide 

-Prepopulating-fields-to-your-JotForm-via-URL-parameters

You can also use our source codes method and manipulate the source codes to create a lookup function to your database similar to the one that is described here: http://stackoverflow.com/questions/558445/dynamically-fill-in-form-values-with-jquery?lq=1.

If you have any query or need further assistance, feel free to revert back.

Thank you.