Getting to learn about "Server Connect / Database Connector" db structure "guessing"

Hi,
I´m very surprised how the Feature “server connect / database connector” (if naming it correctly) does allow Wappler to retrieve a complete Database structure with its table and field names, etc… out of “nowhere”.
I mean without me even declaring it in a previous step nor installing a component on my own server…
I was not aware of this technology before using wappler.

I Tried googling “server connect / database connector” to learn more about. from the basics to how it indeed works to achieve that, does it comes preinstalled on Servers ?..
I could not find anything…

What would be the right expression to look for to get videos and articles and learn about that feature better… ?
tks…