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2016 Sep 1z0-047 Study Guide Questions:

Q111. 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)| 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

Q112. Which three statements are true regarding the WHERE and HAVING clauses in a SQL statement? (Choose three.) 

A. The HAVING clause conditions can have aggregate functions. 

B. The HAVING clause conditions can use aliases for the columns. 

C. WHERE and HAVING clauses cannot be used together in a SQL statement. 

D. The WHERE clause is used to exclude rows before the grouping of data. 

E. The HAVING clause is used to exclude one or more aggregated results after grouping data. 

Answer: ADE

Q113. 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

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Q114. 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

Q115. View the Exhibit and examine the structure of the ORDERS and ORDER_ITEMS tables. 

In the ORDERS table, ORDER_ID is the PRIMARY KEY and ORDER_DATE has the DEFAULT value as SYSDATE. 

Evaluate the following statement: 

UPDATE orders 

SET order_date=DEFAULT 

WHERE order_id IN (SELECT order_id FROM order_items 

WHERE qty IS NULL); 

What would be the outcome of the above statement? 

A. The UPDATEstatementwould not work because the main queryandthe subquery usedifferenttables. 

B. The UPDATEstatement would not work becausetheDEFAULTvaluecan be used only in INSERT statements. 

C. TheUPDATEstatementwould changeall ORDER_DATE values to SYSDATE provided the current ORDER_DATE is NOT NULLand QTYis NULL 

D. The UPDATE statement would change all the ORDER_DATE values to SYSDATE irrespective of what the current ORDER_DATE value is for all orders where QTY is NULL 

Answer: D

Q116. Evaluate the following statements: 

CREATE TABLE digits 

(id NUMBER(2), 

description VARCHAR2(15)); 

INSERT INTO digits VALUES (1,'ONE’); 

UPDATE digits SET description =TWO'WHERE id=1; 

INSERT INTO digits VALUES (2.’TWO’); 

COMMIT; 

DELETE FROM digits; 

SELECT description FROM digits 

VERSIONS BETWEEN TIMESTAMP MINVALUE AND MAXVALUE; 

What would be the outcome of the above query? 

A. Itwouldnot display any values. 

B. It would displaythevalue TWO once. 

C. Itwould display the valueTWOtwice. 

D. Itwould display the values ONE, TWO, andTWO. 

Answer: C

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Q117. View the Exhibit and examine the structure of EMPLOYEES and JOB_IHISTORY tables. 

The EMPLOYEES table maintains the most recent information regarding salary, department, and job for all the employees. The JOB_HISTORY table maintains the record for all the job changes for the employees. You want to delete all the records from the JOB_HISTORY table that are repeated in the EMPLOYEES table. 

Which two SQL statements can you execute to accomplish the task? (Choose two.) 

A. DELETE FROM job_history j WHERE employee_id = (SELECT employee_id FROM employees e WHERE j.employee_id = e.employee_id) AND job _id = (SELECT job _id FROM employees e WHERE j.job_id = e.job_id); 

B. DELETE FROM job_history j WHERE (employee_id, job _id) = ALL (SELECT employee_id, job_id FROM employees e WHERE j.employee_id = e.employee_id and j.job_id = e.job_id) 

C. DELETE FROM job_history j WHERE employee_id = (SELECT employee_id 

FROM employees e 

WHERE j.employee_id = e.employee_id and j.job_id = e.job_id) 

D. DELETE FROM job_history j WHERE (employee_id, job _id) = (SELECT employee_id, job_id FROM employees e WHERE j.employee_id = e.employee_id and j.job_id = e.job_id) 

Answer: C,D

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

Evaluate the following SQL statement: 

SELECT oi.order_id, product_jd, order_date 

FROM order_items oi JOIN orders o 

USING(order_id); 

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

A. The statement would not execute because table aliases are not allowed in the JOIN clause. 

B. The statement would not execute because the table alias prefix is not used in the USING clause. 

C. The statement would not execute because all the columns in the SELECT clause are not prefixed with table aliases. 

D. The statement would not execute because the column part of the USING clause cannot have a qualifier in the SELECT list. 

Answer: D

Q119. Which two statements are true regarding the execution of the correlated subqueries? (Choose two.) 

A. The nested query executes after the outer query returns the row. 

B. The nested query executes first and then the outer query executes. 

C. The outer query executes only once for the result returned by the inner query. 

D. Each row returned by the outer query is evaluated for the results returned by the inner query. 

Answer: AD

Q120. View the Exhibit and examine the structure of the PRODUCT_INFORMATION and INVENTORIES tables. 

You have a requirement from the supplies department to give a list containing PRODUCT_ID, SUPPLIER_ID, and QUANTITY_ON_HAND for all the products wherein QUANTITY_ON_HAND is less than five. 

Which two SQL statements can accomplish the task? (Choose two.) 

A. SELECT product_id, quantity_on_hand , supplier_id FROM product_information NATURAL JOIN inventories AND quantity_on_hand<5; 

B. SELECT i.product_id, i.quantity_on_hand , pi.supplier_id FROM product_information pi JOIN inventoriesi USING (product_id) AND quantity_on_hand < 5; 

C. SELECT i.product_id, i.quantity_on_hand , pi.supplier_id FROM product_information pi JOIN inventories i ON (pi. product_id=i. product_id) WHERE quantity_on_hand < 5; 

D. SELECT i.product_id, i.quantity_on_hand , pi.supplier_id FROM product_information pi JOIN inventories i ON (pi. product_id=i. product_id) AND quantity_on_hand < 5; 

Answer: CD

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