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Q1. 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
Q2. Evaluate the following CREATE TABLE commands:
CREATE TABLE orders
(ord_no NUMBER(2) CONSTRAINT ord_pk PRIMARY KEY,
ord_date DATE,
cust_id NUMBER(4));
CREATE TABLE ord_items
(ord_no NUMBER(2),
item_no NUMBER(3),
qty NUMBER(3) CHECK (qty BETWEEN 100 AND 200),
expiry_date date CHECK (expiry_date > SYSDATE),
CONSTRAINT it_pk PRIMARY KEY (ord_no,item_no),
CONSTRAINT ord_fk FOREIGN KEY(ord_no) REFERENCES orders(ord_no));
Why would the ORD_ITEMS table not get created?
A. SYSDATE cannot be used with the CHECK constraint.
B. TheCHECK constraint cannot be usedtwiceforthesame table.
C. TheBETWEENclause cannot be used for the CHECK constraint.
D. ORD_NO and ITEM_NO cannotbeused asacomposite primarykeybecause ORD_NO is also the FOREIGN KEY.
Answer: A
Q3. 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
Q4. Given below are the SQL statements executed in a user session:
CREATE TABLE product
(pcode NUMBER(2),
pnameVARCHAR2(10));
INSERT INTO product VALUES(1, ‘pen’);
INSERT INTO product VALUES (2,'penci’);
SAVEPOINT a;
UPDATE product SET pcode = 10 WHERE pcode = 1;
SAVEPOINT b;
DELETE FROM product WHERE pcode = 2;
COMMIT;
DELETE FROM product WHERE pcode=10;
ROLLBACK TO SAVEPOINT a;
Which statement describes the consequences?
A. No SQL statementwouldberolledback.
B. Both the DELETE statements would be rolled back.
C. Only the second DELETE statementwould be rolledback.
D. Both theDELETE statementsand the UPDATE statement would berolledback.
Answer: A
Q5. View the Exhibit and examine the structure of ORDERS and CUSTOMERS tables.
Which INSERT statement should be used to add a row into the ORDERS table for the customer whose CUST LAST NAME is Roberts and CREDIT LIMIT is 600?
A. INSERT INTO orders VALUES (1,'10-mar-2007', 'direct', (SELECT customer_id FROM customers WHERE cust_last_name='Roberts' AND credit_limit=600), 1000);
B. INSERT INTO orders (order_id,order_date,order_mode, (SELECT customer_id FROM customers WHERE cust_last_name='Roberts' AND credit_limit=600) .order_total)
VALUES(1 ,'10-mar-2007', 'direct', &&customer_id, 1000);
C. INSERT INTO orders (order_id.order_date.order_mode,
(SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND
credit _limit=600) .order_total)
VALUES(1 ,'IO-mar-2007', 'direct', &customer_id, 1000);
D. INSERT INTO(SELECT o.order_id, o.order_date.o.orde_mode.c.customer_id,
o.order_totalFROM orders o, customers c
WHERE o.customer_id = c.customer_id
AND c.cust_last_name='Roberts'ANDc. Credit_limit=600)
VALUES (1,'10-mar-2007', 'direct',(SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND
Credit_limit=600), 1000);
Answer: A
Q6. View the Exhibit and examine the description of the PRODUCT_INFORMATION table.
SELECT product_name, list_price, min_price, list_price - min_price Difference FROM product_information
Which options when used with the above SQL statement can produce the sorted output in ascending order of the price difference between LIST_PRICE and MIN_PRICE? (Choose all that apply.)
A. ORDERBY4
B. ORDER BY MIN_PRICE
C. ORDER BY DIFFERENCE
D. ORDER BY LIST_PRICE
E. ORDERBYLIST_PRICE–MIN_PRICE
Answer: ACE
Q7. 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
Q8. Which statement correctly differentiates a system privilege from an object privilege?
A. System privileges can be granted only by the DBA whereas object privileges can be granted by DBAs or the owner of the object.
B. System privileges give the rights to only create user schemas whereas object privileges give rights to manipulate objects in a schema.
C. Users require system privileges to gain access to the database whereas they require object privileges to create objects in the database.
D. A system privilege is the right to perform specific activities in a database whereas an object privilege is a right to perform activities on a specific object in the database.
Answer: D
Q9. Which statements are correct regarding indexes? (Choose all that apply.)
A. When a table is dropped, the corresponding indexes are automatically dropped.
B. For each DML operation performed, the corresponding indexes are automatically updated.
C. Indexes should be created on columns that are frequently referenced as part of an expression.
D. A non-deferrable PRIMARY KEY or UNIQUE KEY constraint in a table automatically creates a unique index.
Answer: ABD
Q10. Which three statements are true regarding single-row functions? (Choose three.)
A. They can accept only one argument.
B. They can be nested up to only two levels.
C. They can return multiple values of more than one data type.
D. They can be used in SELECT, WHERE, and ORDER BY clauses.
E. They can modify the data type of the argument that is referenced.
F. They can accept a column name, expression, variable name, or a user-supplied constant as arguments.
Answer: DEF
Q11. View the Exhibit and examine the structure of the ORDERS and ORDER_ITEMS tables.
Evaluate the following SQL statement:
SELECT oi.order_id, product_id, 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 statementwouldnot execute because table aliasesarenot allowed in the JOIN clause.
B. Thestatement wouldnotexecute because thetablealias prefix is not usedin theUSING clause.
C. The statementwouldnot execute because allthecolumns 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 haveaqualifier in the SELECT list.
Answer: D
Q12. Given below is a list of datetime data types and examples of values stored in them in a random order:
Datatype Example
1) INTERVAL YEAR TO MONTH a) 2003-04-15 8:00:00 -8:00'
2) TIMESTAMP WITH LOCAL TIME ZONE b) '-K)6 03:30:16.000000'
3) TIMESTAMP WITH TIME ZONE c) '17-JUN-03 12.00.00.000000 AM'4)INTERVAL DAY TO
SECOND d) '402-00'
Identify the option that correctly matches the data types with the values.
A. 1-d.2-c.3-a.4-b
B. 1-b.2-a.3-c.4-d
C. 1-b.2-a,3-d,4-c
D. 1-d.2-c.3-b.4-a
Answer: A
Q13. 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_jd, TO_YMINTERVAL(warranty_period) FROM product_information;
C. SELECT product_id, TO_YMINTERVAL(SYSDATE) + warranty_period FROM product_information;
D. SELECT product_jd, TO_YMINTERVAL(SYSDATE + warranty_period) FROM product_information;
Answer: A
Q14. View the Exhibit and examine the description of the EMPLOYEES table.
Your company decided to give a monthly bonus of $50 to all the employees who have completed five years in the company. The following statement is written to display the LAST_NAME, DEPARTMENT_ID, and the total annual salary:
SELECT last_name, departmentjd, salary450*12 "Annual Compensation" FROM employees WHERE MONTHS_BETWEEN(SYSDATE, hire_date)/12 >= 5;
When you execute the statement, the "Annual Compensation" is not computed correctly. What changes would you make to the query to calculate the annual compensation correctly?
A. Change the SELECT clause to SELECT last_name, department_id, salary*12+50 "Annual Compensation".
B. Change the SELECT clause to SELECT last_name, department_id, salary+(50*12) "Annual Compensation".
C. Change the SELECT clause to SELECT last_name, department_id, (salary +50)*12 "Annual Compensation".
D. Change the SELECT clause to SELECT last_name, department_id, (salary*12)+50 "Annual Compensation".
Answer: C
Q15. View the Exhibit and examine the data in EMP and DEPT tables.
In the DEPT table, DEPTNO is the PRIMARY KEY.
In the EMP table, EMPNO is the PRIMARY KEY and DEPTNO is the FOREIGN KEY referencing the DEPTNO column in the DEPT table.
What would be the outcome of the following statements executed in the given sequence?
DROP TABLE emp;
FLASHBACK TABLE emp TO BEFORE DROP;
INSERT INTO emp VALUES (2,COTT 10); INSERT INTO emp VALUES (3,ING 55);
A. Both the INSERT statements would fail because all constraints are automatically retrieved when the table is flashed back.
B. Both the INSERT statements would succeed because none of the constraints on the table are automatically retrieved when the table is flashed back.
C. Only the first INSERT statement would succeed because all the constraints except the primary key constraint are automatically retrieved after a table is flashed back.
D. Only the second INSERT statement would succeed because all the constraints except referential integrity constraints that reference other tables are retrieved automatically after the table is flashed back.
Answer: D