I was employed there so I don't feel entirely comfortable stating their name. Just google around for "operational historian". It was really frustrating because we had these ideas years ago (and many other ideas), but due to reasons we were not allowed to actually make the product genuinely better. Also, the product is in more places than you'd think because they partner with vendors to sell the database as a component in a larger system that the vendor packages up and sells.

I suspect AVEVA PI (formerly OSIsoft) is what they are referring to. PI is excessively popular in Enterprise scenarios either OT or IT.

He's probably referring to OSIsoft's PI historian.

Their stuff is a nightmare to use, and is insanely expensive.

Always nice when we get to just swap it out for something like Canary or even Ignition although folks are always trying to trash the Ignition Historian when it works well for most use cases people need to solve.

Yeah, Ignition’s historian isn’t meant to replace or compete with PI, it’s just meant to provide a basic historian that meets the average user’s needs.

KDB in finance?