Does any such thing exist? Is anyone out their working on temporal support for, say, PostgreSQL? Anyone know of anything interesting?
The only thing I really found on the net was BtPgsql, a Ruby bi-temporal emulation layer for PostgreSQL.
There are or were some proposed standards for this temporal stuff, TSQL2 and SQL3/Temporal, but their current status sounds rather confused. Note that last link says in part, "Due to disagreements within the ISO committee as to where temporal support in SQL should go, the project responsible for temporal support was canceled near the end of 2001. Hence, the working draft, "Part 7, SQL/Temporal" is in limbo."!