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2016 Aug oca 1z0-047 dumps:

Q11. View the Exhibit and examine the description of the EMPLOYEES table. 

Evaluate the following SQL statement: SELECT employee_id, last_name, jobjd, manager_id, LEVEL FROM employees START WITH employee_id = 101 CONNECT BY PRIOR employee_id=manager_id; 

Which two statements are true regarding the output of this command? (Choose two.) 


A. Theoutputwouldbeintop-downhierarchy starting with EMPLOYEE_ID having value 101. 

B. Theoutput wouldbein bottom-up hierarchystartingwith EMPLOYEE_ID havingvalue101. 

C. TheLEVEL columndisplaysthenumber of employees in the hierarchy under the employee having theEMPLOYEE_ID 101. 

D. The LEVEL column displays the level in the hierarchy at which the employee is placed undertheemployee having the EMPLOYEE_ID 101 

Answer: AD


Q12. View the Exhibit and examine the details of the EMPLOYEES table. 

You want to generate a hierarchical report for all the employees who report to the employee whose EMPLOYEE_ID is 100. 


Which SQL clauses would you require to accomplish the task? (Choose all that apply.) 

A. WHERE 

B. HAVING 

C. GROUP BY 

D. START WITH 

E. CONNECT BY 

Answer: ADE


Q13. 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


Q14. View the Exhibit and examine the structure of the PRODUCT INFORMATION table. 


Which two queries would work? (Choose two.) 

A. SELECT product_name 

FROM product_information 

WHERE list_price = (SELECT AVG(list_price) 

FROM product_information); 


B. SELECT product_status 

FROM product_information 

GROUP BY product_status 

WHERE list_price < (SELECT AVG(list_price) 

FROM product_information); 


C. SELECT product_status 

FROM product_information 

GROUP BY product_status 

HAVING list_price > (SELECT AVG(list_price) 

FROM product_information); 


D. SELECT product_name FROM product_jnformation WHERE list_price < ANY(SELECT AVG(list_price) FROM product_jnformation GROUP BY product_status); 

Answer: AD


Q15. Which two statements are true about sequences created in a single instance database? (Choose two.) 

A. The numbers generated by a sequence can be used only for one table. 

B. DELETE <sequencename> would remove a sequence from the database. 

C. CURRVAL is used to refer to the last sequence number that has been generated. 

D. When the MAXVALUE limit for a sequence is reached, you can increase the MAXVALUE limit by using the ALTER SEQUENCE statement. 

E. When a database instance shuts down abnormally, the sequence numbers that have been cached but not used would be available once again when the database instance is restarted. 

Answer: CD


1z0-047  practice exam

Renewal 1z0-047 oracle database sql expert exam dumps free:

Q16. View the Exhibit and examine the structure of the ORDERS table: 

The ORDER_ID column has the PRIMARY KEY constraint and CUSTOMER_ID has the NOT NULL constraint. 

Evaluate the following statement: 

INSERT INTO (SELECT order_id.order_date.customer_id 

FROM ORDERS 

WHERE order_total = 1000 

WITH CHECK OPTION) 

VALUES (13, SYSDATE, 101); 

What would be the outcome of the above INSERT statement? 


A. It would execute successfully and the new row would be inserted into a new temporary table created by the subquery. 

B. It would execute successfully and the ORDER_TOTAL column would have the value 1000 inserted automatically in the new row. 

C. It would not execute successfully because the ORDER_TOTAL column is not specified in the SELECT list and no value is provided for it. 

D. It would not execute successfully because all the columns from the ORDERS table should have been included in the SELECT list and values should have been provided for all the columns. 

Answer: C


Q17. View the Exhibit and examine the description of the EMPLOYEES and DEPARTMENTS tables. 


You want to display the LAST_NAME for the employees, LAST_NAME for the manager of the employees, and the DEPARTMENT_NAME for the employees having 100 as MANAGER_ID. The following SQL statement was written: 

SELECT m.last_name "Manager", e.last_name "Employee", department_name "Department" FROM employees m JOIN employees e 

ON (m.employee_id = e.manager_id) 

WHERE e.manager_id=100 

JOIN departments d 

ON (e.department_id = d.department_id); 

Which statement is true regarding the output of this SQL statement? 

A. The statementwouldprovide the desired results. 

B. Thestatement wouldnotexecute because the ON clause iswritten twice. 

C. Thestatement wouldnot execute because the WHERE clause is wrongly placed. 

D. The statement wouldnot execute because the self join usestheON clauseinsteadof the USING clause. 

Answer: C


Q18. View the Exhibit and examine the structure of ORD and ORD_ITEMS tables. 


In the ORD table, the PRIMARY KEY is ORD_NO and in the ORD_ITEMS tables the composite PRIMARY KEY is (ORD_NO, ITEM_NO). 

Which two CREATE INDEX statements are valid? (Choose two.) 


A. CREATE INDEX ord_idx 

ON ord(ord_no); 


B. CREATE INDEX ord_idx 

ON ord_items(ord_no); 


C. CREATE INDEX ord_idx 

ON ord_items(item_no); 


D. CREATEINDEX ord_idx 

ON ord,ord_items(ord_no, ord_date,qty); 


Answer: BC


Q19. Which three tasks can be performed using regular expression support in Oracle Database 10g? (Choose three.) 

A. it can be used to concatenate two strings. 

B. it can be used to find out the total length of the string. 

C. it can be used for string manipulation and searching operations. 

D. it can be used to format the output for a column or expression having string data. 

E. it can be used to find and replace operations for a column or expression having string data. 

Answer: CDE


Q20. Which statements are true regarding the hierarchical query in Oracle Database 10g? (Choose all that apply. 

A. It is possible to retrieve data only in top-down hierarchy. 

B. Itis possible to retrieve data in top-down or bottom-up hierarchy. 

C. It is possible to remove an entire branch from the output of the hierarchical query. 

D. You cannot specify conditions when you retrieve data by using a hierarchical query. 

Answer: BC