Trope-a-Day: Ancient Keeper

Ancient Keeper: Remember those elder-race archives left behind by dead civilizations?  And the Living Relic mind-states found therein?  At least some of those are these, in the form of the index/assistant/librarian AIs that used to manage the archive before it became a relic of a dead civilization.  Some are even functional enough to keep doing it once you get the archive back on-line.