The SHOW WHAT_IF command displays the owners that are affected
    if the element you specify is modified by the CHANGE command. For
    the owners to be displayed, the relationship between owner and
    member must have an associated CDD$NOTICE_ACTION property value
    of SIGNAL.

    Owners with this property value generally represent an object
    outside the repository, such as a database. Each owner receives a
    possibly invalid warning if you issue the CHANGE command for the
    specified element.

    To determine the CDD$NOTICE_ACTION property value of a
    relationship, use the SHOW PROTOCOL command.

    The SHOW WHAT_IF command lists owners if they have either
    directory or processing names. CDO looks first for the directory
    name and displays it if one exists. If a directory name does not
    exist, CDO then looks for and displays the processing name.

    An element can only exist in the repository without either
    a directory or processing name if it has a relationship to
    an element that has a directory name. CDO displays the name
    unspecified message in this case.