---

Examine the structure if the EMPLOYEES table: You need to create a view called EMP_VU that allows the user to insert rows through the view. Which SQL statement, when used to create the EMP_VU view, allows the user to insert rows?（）
A:CREATE VIEW emp_Vu AS   SELECT employee_id, emp_name,   department_id   FROM employees   WHERE mgr_id IN (102, 120);
B:CREATE VIEW emp_Vu AS   SELECT employee_id, emp_name, job_id   department_id   FROM employees   WHERE mgr_id IN (102, 120);
C:CREATE VIEW emp_Vu AS   SELECT department_id, SUM(sal) TOTALSAL   FROM employees   WHERE mgr_id IN (102, 120)   GROUP BY department_id;
D:CREATE VIEW emp_Vu AS   SELECT employee_id, emp_name, job_id,   DISTINCT department_id   FROM employees;

---

出自：Oracle认证

显示答案