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Q31. 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.
Q32. Given below is a list of functions and the tasks performed by using these functions, in random order.
1) LPAD a) Used to truncate a column, expression, or value to n decimal places 2) TRUNC b) Used to remove heading or trailing or both characters from the character string 3) DECODE c) Pads the character value right-justified to a total width of n character positions 4) TRIM d) Used to return the numeric value for position of a named character from the character string 5) INSTR e) Used to translate an expression after comparing it with each search value
Which option correctly matches the function names with their usage?
Q33. 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.
Q34. Which statement is true regarding the CUBE operator in the GROUP BY clause of a SQL statement?
A. It produces only aggregates for the groups specified in the GROUP BY clause.
B. It finds all the NULL values in the superaggregates for the groups specified in the GROUP BY clause.
C. It produces 2 n possible superaggregate combinations, if the n columns and expressions are specified in the GROUP BY clause.
D. It produces n+1 possible superaggregatecombinations, if the n columns and expressions are specified in the GROUP BY clause.
Q35. Evaluate the SQL statements:
CREATE TABLE new_order
booking_date TIMESTAMP WITH LOCAL TIME ZONE);
The database is located in San Francisco where the time zone is -8:00.
The user is located in New York where the time zone is -5:00.
A New York user inserts the following record:
INSERT INTO new_order
VALUES(1, TIMESTAMP ?007-05-10 6:00:00 -5:00?);
Which statement is true?
A. When theNewYorkuserselects the row, booking_date is displayed as 007-05-10 3.00.00.000000'
B. When the New York user selectstherow, booking_date is displayed as 2007-05-10 6.00.00.000000 -5:00'.
C. WhentheSan Francisco user selectstherow, booking_date is displayed as 007-05-103.00.00.000000'
D. When the San Francisco user selectstherow, booking_dateis displayed
Q36. View the Exhibit and examine the structure of the ORDERS table.
Which UPDATE statement is valid?
A. UPDATE orders
SETorder_date = 12-mar-2007\\ order_total IS NULL WHERE order_id = 2455;
B. UPDATE orders
SET order_date = 12-mar-2007', order_total = NULL WHERE order_id = 2455;
C. UPDATE orders
SET order_date = '12-mar-2007'
AND order_total = TO_NUMBER(NULL)
WHERE order_id = 2455;
D. UPDATE orders
SET order_date = TO_DATE('12-mar-2007,l,dd-mon-yyyy')lSET order_total =
TO_NUMBER(NULL) WHERE order id = 2455;
Q37. View the Exhibit and examine the structure of the PRODUCT INFORMATION table.
Which two queries would work? (Choose two.)
A. SELECT product_name
WHERE list_price = (SELECT AVG(list_price)
B. SELECT product_status
GROUP BY product_status
WHERE list_price < (SELECT AVG(list_price)
C. SELECT product_status
GROUP BY product_status
HAVING list_price > (SELECT AVG(list_price)
D. SELECT product_name FROM product_jnformation WHERE list_price < ANY(SELECT AVG(list_price) FROM product_jnformation GROUP BY product_status);
Q38. View the Exhibit and examine the descriptions of the EMPLOYEES and DEPARTMENTS tables.
The following SQL statement was executed:
SELECT e.department_id, e.job_id, d.location_id, sum(e.salary) total,
GROUPING(e. department_id) GRP_DEPT,
GROUPING(d. location_id) GRP_LOC
FROM employees e JOIN departments d
ON e.department_id = d.department_id
GROUP BY ROLLUP (e.department_id, e.job_id, d.location_id);
View the Exhibit2 and examine the output of the command.
Which two statements are true regarding the output? (Choose two.)
A. The value1in GRP_LOC means that the LOCATION_ID column is taken into account to generate the subtotal.
B. The value 1 in GRPJOBandGRP_LOC meansthatJOB_IDandLOCATION_ID columns are nottakeninto accountto generatethesubtotal.
C. Thevalue1inGRPJOB and GRP_LOC meansthatthe NULL value in JOBJD and LOCATIONJD columns aretakeninto account togeneratethe subtotal.
D. The value 0 inGRP_DEPT,GRPJOB, and GRP_LOC means that DEPARTMENT_ID, JOB_ID, and LOCATION_ID columnsaretaken into account to generate the subtotal
Q39. Which two statements best describe the benefits of using the WITH clause? (Choose two.)
A. It enables users to store the results of a query permanently.
B. It enables users to store the query block permanently in the memory and use it to create complex queries.
C. It enables users to reuse the same query block in a SELECT statement, if it occurs more than once in a complex query.
D. It can improve the performance of a large query by storing the result of a query block having the WITH clause in the user's temporary tablespace.
Q40. View the Exhibit and examine DEPARTMENTS and the LOCATIONS tables.
Evaluate the following SOL statement:
SELECT location_id, city FROM locations I WHERE NOT EXISTS (SELECT location_id FROM departments WHERE location_id <> I. location_id);
This statement was written to display LOCATION_ID and CITY where there are no departments located. Which statement is true regarding the execution and output of the command?
A. The statementwouldexecute andwouldreturn the desired results.
B. Thestatement wouldnotexecute becausethe= comparison operatorismissing in the WHERE clause of theouterquery.
C. Thestatement wouldexecutebutitwillreturnzerorows because the WHERE clause intheinner query shouldhavethe= operatorinstead of <>.
D. The statement wouldnot execute because the WHERE clause in the outer query is missing the column name for comparison with the inner query result.