Can I write into a database?

Knowi doesn't insert/update records into your own database by default due to security reasons. However, you can use our Trigger notifications/alerts to call into a webhook that can insert/update into a database. 

Here’s an example: This uses a Trigger/Alert using a web hook that sends the data into a web hook (dreamfactory API in this case) that writes it into a MySQL database: http://recordit.co/rvzb65v2Cg