No, it was a single real-world database.
Just in case if it looks surprisingly that Postgres can deal with such numbers of objects, I suggest checking this out: https://www.pgcon.org/2013/schedule/attachments/283_Billion_...
Just in case if it looks surprisingly that Postgres can deal with such numbers of objects, I suggest checking this out: https://www.pgcon.org/2013/schedule/attachments/283_Billion_...