create table department
(deptid number(3) primary key,
dept_name varchar(2) check (dept_name in('CSE','EEE','BBA','Eng','Ach')),
budget number(6)
DEFAULT  0 );
desc department;

create table course(crs_id number(4) primary key,
crs_name varchar2(20) not null,
deptid	number(3) REFERENCES department (deptid));