Hello,Is there any feature in Wix site such as getting notification on input submission from database? Like if someone uploads on my website

You can simply use Wix Automations.
https://support.wix.com/en/ascend-by-wix/wix-automations

Or you can get an email on form submission.
https://support.wix.com/en/article/corvid-tutorial-sending-an-email-on-form-submission

Or you can use triggered emails.
https://support.wix.com/en/ascend-by-wix/triggered-emails

Or you can look at implementing Site Monitoring.
https://support.wix.com/en/corvid-by-wix/site-monitoring
https://support.wix.com/en/article/corvid-about-site-monitoring
https://www.wix.com/corvid/reference/site-monitoring.html

The simple way is to connect hook to the database write function and make appropriate action. For example on my site I monitor if somebody completes the payment or uploading the pdf document I’ll sending the information to the Telegram messenger. this works always even if you have not run own browser.
If you are willing to receive the information when you already entering your site you have 2 options:

  1. Poll the the last record the the database. If the time is not the same as you previously requested - update you page
  2. Another way is to use wix-realtime api