oracle 9i 라고 기본 활용서가 있는데 거기에 있는 1장 문제를 풀어보쟈~~ select * from departments; select employee_id, last_name, job_id, hire_date startdate from employees; select distinct job_id from employees; select employee_id "Emp #", last_name Employee, job_id job, hire_date from employees; select last_name || ' , ' || job_id "Employee and Title" from employees; select employee_id || ' , ' || first_name || ' , ' |..