How will I get the data for the submitted form?

is it from database or flatfiles?

All form submissions can be viewed in the Submissions page. Here's a guide: How-to-View-Form-Submissions.

You can import the form submissions into an Excel, CSV or PDF file. Here's a guide: How-to-Download-Form-Submissions-as-Excel-CSV-PDF.

You may also integrate the form into Google Spreadsheet. Here's a guide: How-to-Integrate-Form-with-Google-Spreadsheet.

If you want to send the submission into an external database like MySQL, please check this guide: How-to-send-Submissions-to-Your-MySQL-Database-Using-PHP.

Hope that helps. If you have any questions, let us know. Thank you.