Creating Sequence with synonym and grants

DROP Sequence hr.dept_seq
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CREATE SEQUENCE hr.dept_seq
INCREMENT BY 1
START WITH 120
MINVALUE 0
MAXVALUE 99999999999
NOCYCLE
NOORDER
NOCACHE
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GRANT SELECT ON hr.dept_seq TO PUBLIC
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CREATE PUBLIC SYNONYM dept_seq for hr.dept_seq
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SELECT DEPT_SEQ.CURRVAL from dual
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SELECT dept_seq.nextval from dual
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