CRDB is a utility to create and or update PMDF database files.
    CRDB simply converts a plain text file into PMDF database records
    and either builds a new database or updates the records in an
    existing database.

    In general, each line of the input file must consist of a left
    hand side and a right hand side. The two sides are separated
    by one or more spaces or tabs. The left hand side is limited
    to 32 characters in a short database (the default variety),
    80 characters in a long database, or 252 characters in a huge
    database. The right hand side is limited to 80 characters in
    a short database, 256 characters in a long database, or 1024
    characters in a huge database. Spaces and tabs may not appear
    in the left hand side (but see the description of the /QUOTED
    qualifier below).

    The format of the input files is described in the PMDF System
    Manager's Guide.