subfile

noun

sub·​file ˈsəb-ˌfī(-ə)l 

variants or sub-file

plural subfiles or sub-files

: a file (such as a computer file) that is part of a larger file or derived from parts of larger files

You simply search through existing files for all the records matching a particular set of criteria and designate those records as a subfile.

—Robert Moskowitz

Word History

First Known Use

1962, in the meaning defined above