From: "Ann Harrison"

> InterBase was intended to be - and was - a transparent replacement for
> Rdb/VMS. Change a logical name from Rdb to ISC and off you went. Never
> did us much good. We kept the base date but the actual VMS datatype
> used 100 nanosecond units since the base date, expressed as a quadword.

I guess VMS datatype does not consider leap seconds, does it ?

> At the time, quadwords were rare, so Jim implemented the InterBase date
> as two discrete longwords. The Rdb bridge handled the conversion, IIRC.