There really are domains that big, so that there is no more normalization or other processes to mitigate the problem.
Examples: Microsoft's registered customers database (all MS products bought by any customer, including operating systems) Tolls taken on the New Jersey road system for FY 2009 DNA data from the Human Genome Project
.....
please also think of ouer most risk exposed users, the ones using Poker / Roulette simulation and analyzing software with an PostgrSQL database below. There are so many rounds of Poker to play .... :)
Harald
-- GHUM Harald Massa persuadere et programmare Harald Armin Massa Spielberger Straße 49 70435 Stuttgart 0173/9409607 no fx, no carrier pigeon - Using PostgreSQL is mostly about sleeping well at night.