This is the revision history for also mentions text::xsv and dbd::csv, but the second one seems in <matrix.org:#rAnyijhRxzFRfdjSHl:matrix.org>

factoid_idsubjectcopulapredicateauthornamespace
9611 also mentions text::xsv and dbd::csv, but the second one seems to be for CSV databases (with SQL-like API). glitchmr <*:##NULL>