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Oracle Introduction to Oracle9i: SQL Sample Questions:

1. Which SQL statement displays the date March 19, 2001 in a format that appears as "Nineteenth of March 2001 12:00:00 AM"?

A) SELECT TO_CHAR(TO_DATE('19-Mar-2001', 'DD-Mon-YYYY), 'fmDdspth "of" Month YYYYfmtHH:HI:SS AM') NEW_DATE FROM dual;
B) SELECT TO_CHAR(TO_DATE('19-Mar-2001', 'DD-Mon-YYYY'), 'fmDdspth "of" Month YYYY fmHH:MI:SS AM') NEW_DATE FROM dual;
C) SELECT TO_CHAR(TO_DATE('19-Mar-2001', 'DD-Mon-YYYY'), 'fmDdspth "of" Month YYYY HH:MI:SS AM') NEW_DATE FROM dual;
D) SELECT TO_CHAR(TO_DATE('19-Mar-2001', 'DD-Mon-YYYY'), 'Ddspth "of" Month YYYY fmHH:MI:SS AM') NEW_DATE FROM dual;

2. Which /SQL*Plus feature can be used to replace values in the WHERE clause?

A) Instead-of variables
B) This feature cannot be implemented through /SQL*Plus.
C) Substitution variables
D) Prompt variables
E) Replacement variables

3. You created a view called EMP_DEPT_VU that contains three columns from the EMPLOYEES and DEPARTMENTS tables:
EMPLOYEE_ID, EMPLOYEE_NAME AND DEPARTMENT_NAME.
The DEPARTMENT_ID column of the EMPLOYEES table is the foreign key to the primary key DEPARTMENT_ID column of the DEPARTMENTS table.
You want to modify the view by adding a fourth column, MANAGER_ID of NUMBER data type from the EMPLOYEES tables.
How can you accomplish this task?

A) MODIFY VIEW emp_dept_vu (ADD manager_id NUMBER);
B) You must remove the existing view first, and then run the CREATE VIEW command with a new column list to modify a view.
C) ALTER VIEW emp_dept_vu (ADD manager_id NUMBER);
D) MODIFY VIEW emp_dept_vu AS SELECT employee_id, employee_name, department_name, manager_id FROM employees e, departments d WHERE e.department_id = d.department_id;
E) CREATE OR REPLACE VIEW emp_dept_vu AS SELECT employee_id, employee_name, department_name, manager_id FROM employees e, departments d WHERE e.department_id = d.department_id;
F) ALTER VIEW emp_dept_vu AS SELECT employee_id, employee_name, department_name, manager_id FROM employee e, departments d WHERE e.department_id = d.department_id;

4. You need to display the last names of those employees who have the letter "A" as the second character in their names.
Which SQL statement displays the required results?

A) SELECT last_name FROM EMP WHERE last name ='_A%';
B) SELECT last_name FROM EMP WHERE last name LIKE '*A%'
C) SELECT last_name FROM EMP WHERE last name ='*A%'
D) SELECT last_name FROM EMP WHERE last_name LIKE '_A%';

5. You need to create a view EMP_VU. The view should allow the users to manipulate the records of only the employees that are working for departments 10 or 20.
Which SQL statement would you use to create the view EMP_VU?

A) CREATE FORCE VIEW emp_vu AS
SELECT *
FROM employees
WHERE department_id IN (10,20);
B) CREATE VIEW emp_vu AS
SELECT *
FROM employees
WHERE department_id IN (10,20);
C) CREATE VIEW emp_vu AS
SELECT *
FROM employees
WHERE department_id IN (10,20)
WITH CHECK OPTION;
D) CREATE VIEW emp_vu AS
SELECT *
FROM employees
WHERE department_id IN (10,20)
WITH READ ONLY;
E) CREATE FORCE VIEW emp_vu AS
SELECT *
FROM employees
WHERE department_id IN (10,20)
NO UPDATE;

Solutions: