[Info-vax] Example of random access by record number on an RMS fixed record size, relative organization file?

[David Jones]

On Thursday, September 21, 2023 at 2:20:44 PM UTC-4, gah4 wrote:
> 
> > If the requirement is some type of keyed file, then just use a keyed file type.
> OS/360 has a keyed file type, but I believe it does a linear search. 
> I suspect it is used for the index of ISAM.

My recollection is that RMS indexed files are more akin to IBM VSAM file structure,
ISAM came earlier.