Free Access Oracle.1z0-071.v2022-02-20.q161 Practice Test (Page 20)

Question 91

View the exhibit and examine the structure in ORDERS and ORDER_ITEMS tables.
You need to create a view that displays the ORDER_ID, ORDER_DATE, and the total number of items in each order.
Which CREATE VIEW statement would create the views successfully?

A.CREATE OR REPLACE VIEW ord_vu (order_id, order_date)AS SELECT o.order_id, o.order_date, COUNT (i.line_item_id)"NO OF ITEMS"FROM orders o JOIN order_items iON (o.order_id = i.order_id)GROUP BY o.order_id, o.order_date;

B.CREATE OR REPLACE VIEW ord_vuAS SELECT o.order_id, o.order_date, COUNT (i.line_item_id)"NO OF ITEMS"FROM orders o JOIN order_items iON (o.order_id = i.order_id)GROUP BY o.order_id, o.order_date;

C.CREATE OR REPLACE VIEW ord_vuAS SELECT o.order_id, o.order_date, COUNT (i.line_item_id) ||"NO OF ITEMS"FROM orders o JOIN order_items iON (o.order_id = i.order_id)GROUP BY o.order_id, o.order_dateWHITH CHECK OPTION;

D.CREATE OR REPLACE VIEW ord_vuAS SELECT o.order_id, o.order_date, COUNT (i.line_item_id)FROM orders o JOIN order_items iON (o.order_id = i.order_id)GROUP BY o.order_id, o.order_date;

Question 92

Examine the following query:
SQL> SELECT prod_id, amount_sold
FROM sales
ORDER BY amount_sold
FETCH FIRST 5 PERCENT ROWS ONLY;
What is the output of this query?

A.It displays 5 percent of the products with the highest amount sold.

B.It displays the first 5 percent of the rows from the SALES table.

C.It displays 5 percent of the products with the lowest amount sold.

D.It results in an error because the ORDER BY clause should be the last clause.

Question 93

SCOTTis a user in the database.
Evaluate the commands issued by the DBA:

Which statement is true regarding the execution of the above commands?

A.Statement 1 would not execute because the WITH GRANToption is missing.

B.Statement 2 would not execute because system privileges and object privileges cannot be granted together in a single GRANTcommand.

C.Statement 3 would not execute because role and system privileges cannot be granted together in a single GRANTstatement.

D.Statement 1 would not execute because the IDENTIFIED BY <password>clause is missing.

Question 94

View the Exhibit and examine the structure in the EMPLOYEES tables.

Evaluate the following SQL statement:
SELECT employee_id, department_id
FROM employees
WHERE department_id= 50 ORDER BY department_id
UNION
SELECT employee_id, department_id
FROM employees
WHERE department_id=90
UNION
SELECT employee_id, department_id
FROM employees
WHERE department_id=10;
What would be the outcome of the above SQL statement?

A.The statement would execute successfully and display all the rows in the ascending order of DEPARTMENT_ID.

B.The statement would not execute because the positional notation instead of the column name should be used with the ORDER BY clause.

C.The statement would not execute because the ORDER BY clause should appear only at the end of the SQL statement, that is, in the last SELECT statement.

D.The statement would execute successfully but it will ignore the ORDER BY clause and display the rows in random order.

Question 95

Which three are key components of an Entity Relationship Model? (Choose three.)

A.an activity

B.a table

C.a relationship

D.an attribute

E.a unique identifier

F.an entity

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Question 91

Question 92

Question 93

Question 94

Question 95

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