rse                    A record selection expression. A phrase
                           that defines specific conditions that
                           individual records must meet before
                           Oracle Rdb includes them in a record stream.

    handle-options         A request handle, a transaction handle, or
                           both.

    REQUEST_HANDLE var     The REQUEST_HANDLE keyword followed by a
                           host language variable. A request handle
                           identifies a compiled Oracle Rdb request.
                           If you do not supply a request handle
                           explicitly, RDML associates a unique
                           request handle for the compiled request.

    TRANSACTION_HANDLE     The TRANSACTION_HANDLE keyword followed by
    var                    a host language variable. A transaction
                           handle identifies a transaction. If
                           you do not supply a transaction handle
                           explicitly, RDML uses the default
                           transaction handle.