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SQL> CREATE TABLE DEPT(
2 DEPTNO NUMBER(2),
3 DNAME VARCHAR2(14),
4 LOC VARCHAR2(13)
5 );
Table created.
SQL>
SQL> INSERT INTO DEPT VALUES (10, 'ACCOUNTING', 'NEW YORK');
1 row created.
SQL> INSERT INTO DEPT VALUES (20, 'RESEARCH', 'DALLAS');
1 row created.
SQL> INSERT INTO DEPT VALUES (30, 'SALES', 'CHICAGO');
1 row created.
SQL> INSERT INTO DEPT VALUES (40, 'OPERATIONS', 'BOSTON');
1 row created.
SQL>
SQL> alter table dept add(last_update date,last_user varchar2(30));
Table altered.
SQL>
SQL> CREATE OR REPLACE TRIGGER deptBR
2 before update or insert
3 ON dept
4 FOR EACH ROW
5 DECLARE
6 begin
7 :new.last_update := sysdate;
8 :new.last_user := user;
9 end;
10 /
Trigger created.
SQL>
SQL> drop table dept;
Table dropped.
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