多项选择题
A. MANAGER must be a role.
B. It allows the MANAGER to pass the specified privileges on to other users.
C. It allows the MANAGER to create tables that refer to the STUDENT_GRADES table.
D. It allows the MANAGER to apply all DML statements on the STUDENT_GRADES table.
E. It allows the MANAGER the ability to select from, insert into, and update the STUDENT_GRADES table.
F. It allows the MANAGER the ability to select from, delete from, and update the STUDENT_GRADES table.
单项选择题 Which operator can be used with a multiple-row subquery?（）
单项选择题 Examine the structure of the EMPLOYEES table: You need to create an index called NAME_IDX on the first name and last name fields of the EMPLOYEES table. Which SQL statement would you use to perform this task?（）
单项选择题 Exhibit: Examine the data in the EMPLOYEES table. Examine the subquery: SELECT last_name FROM employees WHERE salary IN (SELECT MAX(salary) FROM employees GROUP BY department_id); Which statement is true?（）