[atombender]

Indeed, Postgres used to have "time travel" [1] — allowing you to view the table as it was a given point in time. It was removed in 6.2, though some of

Of course, support doesn't require Postgres-style MVCC. Oracle has time travel, which it calls Flashback ("SELECT AS OF"), even though it uses a different type of concurrency control.

[1] https://www.postgresql.org/docs/6.3/c0503.htm