#autoidentity

[ruxoz]

Using Trigger:

CREATE TABLE departments ( ID NUMBER(10) NOT NULL, DESCRIPTION VARCHAR2(50) NOT NULL); ALTER TABLE departments ADD ( CONSTRAINT dept_pk PRIMARY KEY (ID)); CREATE SEQUENCE dept_seq; CREATE OR REPLACE TRIGGER dept_bir BEFORE INSERT ON departments REFERENCING OLD AS old NEW AS new FOR EACH ROW BEGIN SELECT dept_seq.NEXTVAL INTO :new.id FROM dual; END;