create table dept (dept_id integer, dname varchar(20), INDEX dept_id_idx(dept_id));
create table emp(emp_id INTEGER, dept_id INTEGER, INDEX dept_id_idx(dept_id), ename varchar(20), salary numeric(6,2), FOREIGN KEY (dept_id) REFERENCES dept(dept_id));
insert into dept values (1, 'MARKETING');
insert into dept values (2, 'RND');
insert into emp values (1, 1, 'James', 1000);
insert into emp values (2, 2, 'James', 2000);
create table dept_arch like dept;