Sequence is a Database object used to generate unique sequential integer values. the syntax is

CREATE SEQUENCE <SEQUENCENAME>

START WITH <INT>

MIN VALUE/NOMINVALUE<INT>

MAXVALUE/NOMAXVALUE<INT>

INCREMENT BY

CYCLE/NOCYCLE

CACHE/NOCACHE;

EX:CREATE SEQUENCE SEQ1

                                        INCREMENT BY 1

                                        START WITH 1

                                        MINVALUE 0

                                        NOCYCLE

                                        NOCACHE

                                        NOORDER;