Table Creation With Constraints in Oracle : DEPT Table

TABLE NAME : DEPT

create table dept
(
deptno number(2) primary key,
dname varchar2(14),
loc varchar2(13));

insert into dept values(10,'accounting','new york');
insert into dept values(20,'research','dallas');
insert into dept values(30,'sales','chicago');
insert into dept values(40,'operations','bostan');