I haven't ever worked at a giganto company myself - even though I've worked with largeish amounts of data... from multi-teribyte pyradmically stored JPEG2000s t

I haven't ever worked at a giganto company myself - even though I've worked with largeish amounts of data... from multi-teribyte pyradmically stored JPEG2000s to 50GB tables of raw rows parsed from ridiculously long documents. I suspect some big places are indeed using Oracle - but notably large companies are still using MySQL or Postgres to great effect (i.e. Facebook).