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Oracle Training Perform incomplete recovery using RMAN

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

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Answer: C

Explanation:
Tables that underlie views often have constraints that limit the data that can be added to those tables. Views
cannot add data to the underlying table that would violate the table's constraints. However, you can also define
a view to restrict the user's ability to change underlying table data even further, effectively placing a special
constraint for data manipulation through the view. This additional constraint says that INSERT or UPDATE
statements issued against the view are cannot create rows that the view cannot subsequently select. This
constraint is configured when the view is defined by adding the WITH CHECK OPTION to the CREATE
VIEW statement.
Incorrect Answers
A: This view does not provide correct semantic of question task.
B: WITH READ ONLY clause is incorrect syntax in the CREATE VIEW command.
D: This view does not provide correct semantic of question task.
E: NO UPDATE clause is incorrect syntax in the CREATE VIEW command.
OCP Introduction to Oracle 9i: SQL Exam Guide, Jason Couchman, p. 301-303
Chapter 7: Creating Other Database Objects in Oracle