JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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.
Please tell us also which Database you are using.
We have existing database integration that you can already use on the form.
Check them here http://apps.jotform.com/category/data_management
MySQL is the most commonly used.
you can follow this user guide on -How-to-send-Submissions-to-Your-MySQL-Database-Using-PHP
Let us know if you need further assistance.