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2016 Jun 1z0-047 Study Guide Questions:

Q111. Given below is a list of functions and their purpose in random order. 

Function Purpose 1)NVL a) Used for evaluating NOT NULL and NULL values 2)NULLIF b) Used to return the first non- null values in a list of expressions 3)COALESCE c) Used 

to compare two expressions. If both are same, it returns NULL; otherwise, it returns only the first expression. 

4)NVL2 d) Used to convert NULL values to actual values 

Identify the correct combination of functions and their usage. 

A. 1-a,2-c,3-b,4-d 

B. 1-d,2-c,3-b,4-a 

C. 1-b,2-c,3-d,4-a 

D. 1-d,2-b,3-c,4-a 

Answer: B

Q112. View the Exhibit and examine the data 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 view 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 i 

ON (o.order_id = i.order_id) 

GROUP BY o.order_id,o.order_date; 

B. CREATE OR REPLACE VIEW ord_vu 

AS SELECT o.order_id, o.order_date, COUNT(i.line_item_id) 

"NO OF ITEMS" 

FROM orders o JOIN order_items i 

ON (o.order_id = i.order_id) 

GROUP BY o.order_id,o.order_date; 

C. CREATE OR REPLACE VIEW ord_vu 

AS SELECT o.order_id, o.order_date, COUNT(i.line_item_id) 

FROM orders o JOIN order_items i ON (o.order_id = i.order_id) 

GROUP BY o.order_id,o.order_date; 

D. CREATE OR REPLACE VIEW ord_vu 

AS SELECT o.order_id, o.order_date, COUNT(i.line_item_id)ll’ NO OF ITEMS' 

FROM orders o JOIN order_items i 

ON (o.order_id = i.order_id) 

GROUP BY o.order_id,o.order_date 

WITH CHECK OPTION; 

Answer: B

Q113. View the Exhibit and examine the structure of the PRODUCT_INFORMATION table. 

You want to see the product names and the date of expiration of warranty for all the products, if the product is purchased today. The products that have no warranty should be displayed at the top and the products with maximum warranty period should be displayed at the bottom. 

Which SQL statement would you execute to fulfill this requirement? 

A. SELECT product_name, category_id, SYSDATE+warranty_period AS "Warranty expire date" FROM product_information ORDER BY SYSDATE-warranty_period; 

B. SELECT product_name, category_id, SYSDATE+warranty_period AS "Warranty expire date" FROM product_information ORDER BY SYSDATE+warranty_period; 

C. SELECT product_name, category_id, SYSDATE+warranty_period AS "Warranty expire date" FROM product_information ORDER BY SYSDATE; 

D. SELECT product_name, category_id, SYSDATE+warranty_period "Warranty expire date" FROM product_information WHERE warranty_period >SYSDATE; 

Answer: B

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Q114. Which mandatory clause has to be added to the following statement to successfully create an external table called EMPDET? 

CREATE TABLE empdet 

(empno CHAR(2), ename CHAR(5), deptno NUMBER(4)) 

ORGANIZATION EXTERNAL 

(LOCATION ('emp.daf)); 

A. TYPE 

B. REJECTLIMIT 

C. DEFAULT DIRECTORY 

D. ACCESS PARAMETERS 

Answer: C

Q115. View the Exhibit and examine the description of the PRODUCT_INFORMATION table. 

You want to display the expiration date of the warranty for a product. Which SQL statement would you execute? 

A. SELECT product_id, SYSDATE + warranty_period FROM product_information; 

B. SELECT product_id, TO_YMINTERVAL(warranty_period) FROM product_information; 

C. SELECT product_id, TO_YMINTERVAL(SYSDATE) + warranty_period FROM product_information; 

D. SELECT product_id, TO_YMINTERVAL(SYSDATE + warranty_period) FROM product_information; 

Answer: A

Q116. Which statement is true regarding synonyms? 

A. Synonyms can be created for tables but not views. 

B. Synonyms are used to reference only those tables that are owned by another user. 

C. A public synonym and a private synonym can exist with the same name for the same table. 

D. The DROP SYNONYM statement removes the synonym, and the status of the table on which the synonym has been created becomes invalid. 

Answer: C

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Q117. Which two statements are true regarding the EXISTS operator used in the correlated subqueries? (Choose two.) 

A. The outer query stops evaluating the result set of the inner query when the first value is found. 

B. It is used to test whether the values retrieved by the inner query exist in the result of the outer query. 

C. It is used to test whether the values retrieved by the outer query exist in the result set of the inner query. 

D. The outer query continues evaluating the result set of the inner query until all the values in the result set are processed. 

Answer: AC

Q118. View the Exhibit and examine the structure of ORDER_ITEMS and ORDERS tables. 

You need to remove from the ORDER_ITEMS table those rows that have an order status of 0 or 1 in the ORDERS table. 

Which DELETE statements are valid? (Choose all that apply.) 

A. DELETE FROM order_items WHERE order_id IN (SELECT order_id FROM orders WHERE order_status in (0,1)); 

B. DELETE * FROM order_items WHERE order_id IN (SELECT order_id FROM orders WHERE order_status IN (0,1)); 

C. DELETE FROM order_items i WHERE order_id = (SELECT order_id FROM orders o WHERE i. order_id = o. order_id AND order_status IN (0,1)); 

D. DELETE FROM (SELECT* FROM order_items i.orders o WHERE i.order_id = o.order_id AND order_status IN (0,1)); 

Answer: ACD

Q119. View the Exhibit and examine the description of the ORDERS table. 

Your manager asked you to get the SALES_REP_ID and the total numbers of orders placed by each of the sales representatives. Which statement would provide the desired result? 

A. SELECT sales_rep_id, COUNT(order_id) total_orders FROM orders 

GROUP BY sales_rep_id; 

B. SELECT sales_rep_id, COUNT(order_id)total_orders FROM orders GROUP BY sales_rep_id, total_orders; 

C. SELECT sales_rep_id, COUNT(order_id)total_orders FROM orders; 

D. SELECT sales_rep_id, COUNT(order_id)total_orders FROM orders WHERE sales_rep_id IS NOT NULL; 

Answer: A

Q120. Given below is the list of meta character syntaxes and their descriptions in random order: Meta character syntax Description 1)^ a) Matches character not in the list 2) [^…] b) Matches character when it occurs at the beginning of a line 3) | c) Treats the subsequent meta character as a literal 4) \\ d) Matches one of the characters such as the OR operator 

Identify the option that correctly matches the meta character syntaxes with their descriptions. 

A. 1-b, 2-a, 3-d,4-c 

B. 1-a, 2-b, 3-d,4-c 

C. 1-d, 2-b, 3-a,4-c 

D. 1-b,2-c,3-d,2-a 

Answer: A

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