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Q31. View the Exhibit and examine the description of the ORDER_ITEMS table.
The following SQL statement was written to retrieve the rows for the PRODUCT_ID that has a UNIT_PRICE of more than 1,000 and has been ordered more than five times:
SELECT product_id, COUNT(order_id) total, unit_price FROM order_items WHERE unit_price>1000 AND COUNT(order_id)>5 GROUP BY product_id, unit_price;
Which statement is true regarding this SQL statement?
A. The statementwouldexecute and give youthedesired result.
B. Thestatementwould not execute becausetheaggregatefunction is usedintheWHEREclause.
C. The statementwouldnot execute because the WHERE clause should havetheOR logical operator insteadofAND.
D. The statement wouldnot execute because intheSELECT clause, the UNIT_PRICE column is placed afterthecolumn having the aggregate function.
Answer: B
Q32. View the Exhibit and examine the structure of the ORD table.
Evaluate the following SQL statements that are executed in a user session in the specified order: CREATE SEQUENCE ord_seq;
SELECT ord_seq.nextval FROM dual;
INSERT INTO ord
VALUES (ord_seq.CURRVAL, 25-jan-2007',101);
UPDATE ord
SET ord_no= ord_seq.NEXTVAL
WHERE cust_id =101;
What would be the outcome of the above statements?
A. All the statements would execute successfullyandthe ORD_NO column would containthevalue 2 for the CUSTJD101.
B. TheCREATE SEQUENCE command would not execute because the minimum value and maximum value for the sequence have not been specified.
C. The CREATE SEQUENCE command wouldnotexecute because the starting value of the sequence and the incrementvaluehave not been specified.
D. Allthe statementswould execute successfully and the ORD_NO column wouldhave the value 20 for the CUST_ID101becausethedefault CACHE value is 20.
Answer: A
Q33. View the Exhibit and examine the data in the LOCATIONS table.
Evaluate the following SOL statement: SELECT street_address FROM locations WHERE REGEXP_INSTR(street_address,'[^[: alpha:]]’) = 1;
Which statement is true regarding the output of this SOL statement?
A. It would display all the street addresses that do not have a substring 'alpha1.
B. It would display all the street addresses where the first character is a special character.
C. It would display all the street addresses where the first character is a letter of the alphabet.
D. It would display all the street addresses where the first character is not a letter of the alphabet.
Answer: D
Q34. Which three statements are true regarding group functions? (Choose three.)
A. They can be used on columns or expressions.
B. They can be passed as an argument to another group function.
C. They can be used only with a SQL statement that has the GROUP BY clause.
D. They can be used on only one column in the SELECT clause of a SQL statement.
E. They can be used along with the single-row function in the SELECT clause of a SQL statement.
Answer: ABE
Q35. View the Exhibit and examine the data in ORDERS_MASTER and MONTHLYjDRDERS tables.
Evaluate the following MERGE statement:
MERGE INTO orders_master o USING monthly_orders m
ON (o.order_id = m.order_id)
WHEN MATCHED THEN
UPDATE SET o.order_total = m.order_total
DELETE WHERE (m.order_total IS NULL)
WHEN NOT MATCHED THEN
INSERT VALUES (m.order_id, m.order_total);
What would be the outcome of the above statement?
A. The ORDERS_MASTER table would contain the ORDERJDs1and 2.
B. TheORDERS_MASTERtablewould containtheORDERJDs 1,2and3.
C. TheORDERS_MASTERtable would containtheORDERJDs 1,2 and 4.
D. The ORDERSMASTER table would containtheORDER IDs 1,2,3 and4.
Answer: C
Q36. View the Exhibit and examine the data 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 statementwouldexecute successfullyanddisplay all the rows intheascending order of DEPARTMENT_ID.
B. Thestatement would execute successfullybutitwillignoretheORDERBYclause and display the rows in random order.
C. The statementwouldnot execute because the positional notationinstead of thecolumn name shouldbeusedwiththe ORDER BY clause.
D. 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.
Answer: D
Q37. Which CREATE TABLE statement is valid?
A. CREATE TABLE ord_details
(ord_no NUMBER(2) PRIMARY KEY,
item_no NUMBER(3)PRIMARY KEY,
ord_date date NOT NULL);
B. CREATE TABLE ord_details
(ord_no NUMBER(2) UNIQUE, NOT NULL,
item_no NUMBER(3),
ord_date date DEFAULT SYSDATE NOT NULL);
C. CREATE TABLE ord_details
(ord_no NUMBER(2) ,
item_no NUMBER(3),
ord_date date DEFAULT NOT NULL,
CONSTRAINT ord_uq UNIQUE (ord_no),
CONSTRAINT ord_pk PRIMARY KEY (ord_no));
D. CREATE TABLE ord_details
(ord_no NUMBER(2),
item_no NUMBER(3),
ord_date date DEFAULT SYSDATE NOT NULL,
CONSTRAINT ord_pk PRIMARY KEY (ord_no, item_no));
Answer: D
Q38. Which statement is true regarding the ROLLUP operator specified in the GROUP BY clause of a SQL statement?
A. It produces only the subtotals for the groups specified in the GROUP BY clause.
B. It produces only the grand totals for the groups specified in the GROUP BY clause.
C. It produces higher-level subtotals, moving from right to left through the list of grouping columns specified in the GROUP BY clause.
D. It produces higher-level subtotals, moving in all the directions through the list of grouping columns specified in the GROUP BY clause.
Answer: C
Q39. View the Exhibit and examine PRODUCTS and ORDER_ITEMS tables.
You executed the following query to display PRODUCT_NAME and the number of times the product has been ordered:
SELECT p.product_name, i.item_cnt
FROM (SELECT product_id, COUNT (*) item_cnt
FROM order_items
GROUP BY product_id) i RIGHT OUTER JOIN products p
ON i.product_id = p.product_id;
What would happen when the above statement is executed?
A. Thestatement would execute successfullytoproducetherequired output.
B. Thestatement wouldnotexecute because inlineviewsandouterjoins cannot be usedtogether.
C. The statementwouldnot execute because the ITEM_CNT alias cannotbedisplayedintheouter query.
D. The statement wouldnot execute because the GROUP BYclausecannot be used intheinline view.
Answer: A
Q40. User OE, the owner of the ORDERS table, issues the following command:
GRANT SELECT .INSERT ON orders TO hr WITH GRANT OPTION;
The user HR issues the following command:
GRANT SELECT ON oe. orders TO scott;
Then, OE issues the following command:
REVOKE ALL ON orders FROM hr;
Which statement is correct?
A. The user SCOTT losestheprivilege to select rowsfromOE.ORDERS.
B. Theuser SCOTT retainstheprivilege to selectrowsfrom OE.ORDERS.
C. The REVOKE statement generates an error because OE has to first revoke the SELECT privilege from SCOTT.
D. TheREVOKE statement generates an error because the ALL keyword cannot be usedforprivilegesthathave been granted using WITH GRANT OPTION.
Answer: A
