The audited financial statements of venture funds (if anyexist) typically state that the majority of the portfolio consists of non-marketable securities the valuations of which are determined by the manager of the fund.
Little ifany definitive data exist on how often unnecessary surgery occurs, but some evidence suggests the problem is bigger than surgeons like to admit.
What the hardware is that goes underneath Oracle (or Ingres etc, the other relational databases, ifany of them still exist so long ago was my involvement in this world) is very much a secondary consideration.