where does the data that is collected through forms stored ?

Hi there , 

We are developing our website on Wix and plan to use your services to create a couple of forms . I would like to understand where does the data / docs collected from the form stored ? Do you recommend a specific data base app for us to collect the data ? 

Ideally we would like to download all this data in a spreadsheet . 

Thanks 

Data is stored within Jotfrom's data centers. Jotform has a very powerful cloud of secured servers. This provides security protection against  malicious attacks like SQL injection and denial of service (DOS) attacks. We also provide a very high-security level throughout our hosting provider's servers for stored data and all of our SSL certificates support high-grade 256-bit encryption.

With regards to your other concerns, I have moved them to a new thread because we believe that we can assist our users better if we provide them answers on each question they have on separate threads. And also, to avoid confusions between answers.

You can send the form Post data to 3rd party script with us. Please take a look at the following article:

How to Insert/Update Submissions to Your MySQL Database Using PHP

You can use the "Send Form Post Data" feature to send the data to your database. However, you need to create  a PHP programming for that. Here's a guide on How-to-Post-Submission-Data-to-Thank-You-Page

You can export your submissions into and Excel or CSV file. After that you can upload or import it to your database. Please refer to this guides:
How-to-export-the-submissions-to-Excel-CSV-file
How-to-create-a-CSV-Report

You can also use the Google Spreadsheet integration so that the form submissions will go to your Google Spreadsheet file. Here's a guide on How-to-Integrate-Form-with-Google-Spreadsheet

Lastly, we have  JotForm Webhooks. Here's a blog posting about it: Send-Instant-Submission-Notifications-with-Webhooks

Hope this helps.