Specifies the data dictionary path name of a data dictionary
    record definition. You can use this clause to retrieve data
    definitions from the dictionary.

    The data dictionary record definition that you specify cannot
    contain any OCCURS clauses or arrays. You must specify a data
    dictionary record definition that contains only valid SQL or
    Oracle Rdb data types.

    The FROM path-name clause cannot be used in a second-level record
    specification (a record-type that you specify within record-
    type).