Specifies a one-dimensional array of elements with one of
    the data types shown in the exact-numeric-type diagram. An
    indicator array provides indicator parameters for fields in the
    host structure. The indicator array must have at least as many
    elements in it as the record definition has.

    You cannot use an indicator array as a record or contain it
    within a record. In other words, the INDICATOR ARRAY OF clause
    cannot be used in a second-level record specification (a record-
    type that you specify within record-type).

    You cannot explicitly refer to individual elements in an
    indicator array. For this reason, you cannot use indicator arrays
    in UPDATE statements or WHERE clauses.