ent (<TT
CLASS="LITERAL"
>ROW</TT
> or
       <TT
CLASS="LITERAL"
>STATEMENT</TT
>)
      </TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>action_timing</TT
></TD
><TD
><TT
CLASS="TYPE"
>character_data</TT
></TD
><TD
>       Time at which the trigger fires (<TT
CLASS="LITERAL"
>BEFORE</TT
>,
       <TT
CLASS="LITERAL"
>AFTER</TT
>, or <TT
CLASS="LITERAL"
>INSTEAD OF</TT
>)
      </TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>action_reference_old_table</TT
></TD
><TD
><TT
CLASS="TYPE"
>sql_identifier</TT
></TD
><TD
>A