What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
Unfortunately, there is no means to achieve this within the form builder. The currently available functionality is the other way around -- that is exporting or pushing the data to your database form the form data/value.
As described in this article -How-to-send-Submissions-to-Your-MySQL-Database-Using-PHP
and JotForm Apps that does it -- http://apps.jotform.com/category/data_management
If you have the programming resource, you can create a custom program using server side programming like PHP to create an interface/connection to pull data from your database to the form fields. You will also need to use the form's full source code then.
As an alternative process, if the objective is to be able to pre-fill the form fields with data or pre-populate the form submission's data with data from external data source.
You can try this 2 Apps
1. Field Prepopulator -- you can pre-populate the form fields before you can let the users use the form.
2. Import Data App -- what it does is, you can directly fill your form's submission database with data from external data source like flat file CSV or Excel format. So, from your own database,you can export the data from there into CSV for example, then use this App to import it into the form submission.
Hope this help. Inform us if there is more we can help you with.