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Q1. View the Exhibit and examine the descriptions of the DEPT and LOCATIONS tables.
You want to update the CITY column of the DEPT table for all the rows with the corresponding value in the CITY column of the LOCATIONS table for each department.
Which SOL statement would you execute to accomplish the task?
A. UPDATE deptd
SETcity=ANY(SELECT city
FROMlocations I);
B. UPDATE deptd
SET city=(SELECT city
FROM locations I)
WHERE d.location_id = l.location_id;
C. UPDATE dept d
SETcity =(SELECTcity
FROM locations I
WHEREd.location_id = l.location_id);
D. UPDATE deptd SET city =ALL(SELECT city FROM locations I WHEREd.location_id = l.location_id);
Answer: C
Q2. View the Exhibit and examine the data in EMPLOYEES and
DEPARTMENTS tables. In the EMPLOYEES table EMPLOYEE_ID is the PRIMARY KEY and DEPARTMENT_ID is the FOREIGN KEY. In the DEPARTMENTS table DEPARTMENT_ID is the PRIMARY KEY.
Evaluate the following UPDATE statement:
UPDATE employees a
SET department_jd =
(SELECT department_id
FROM departments
WHERE location_id = ‘2100’),
(salary, commission_pct) =
(SELECT 1.1*AVG(salary), 1.5*AVG(commission_pct)
FROM employees b
WHERE a. department_jd = b. department_id)
WHERE first_name|| '||last_name = 'Amit Banda'
What would be the outcome of the above statement?
A. Itwould execute successfullyandupdate therelevant data.
B. It would not execute successfully because there isno LOCATION_ID2100 in theDEPARTMENTStable.
C. It wouldnotexecute successfully because the condition specified with the concatenation operator is not valid.
D. Itwould not execute successfully becausemultiplecolumns (SALARY,COMMISSION_PCT)cannot be used in an UPDATE statement.
Answer: A
Q3. 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 superaggregate combinations, if the n columns and expressions are specified in the GROUP BY clause.
Answer: C
Q4. View the Exhibit and examine the descriptions of ORDER_ITEMS and ORDERS tables.
You want to display the CUSTOMER_ID, PRODUCT_ID, and total (UNIT_PRICE multiplied by QUANTITY) for the order placed. You also want to display the subtotals for a CUSTOMER_ID as well as for a PRODUCT ID for the last six months.
Which SQL statement would you execute to get the desired output?
A. SELECT o.customer_id, oi.product_id, SUM(oi.unit_price*oi. quantity) "Total FROM order_items oi JOIN orders o ON oi.order_id=o.order_id GROUP BY ROLLUP (o.customer_id, oi.product_id) WHERE MONTHS_BETWEEN(order_ date,SYSDATE)<=6;
B. SELECT o.customer_id, oi.product_id, SUM(oi.unit_price*oi. quantity) "Total FROM order_items oi JOIN orders o ON oi.order_id=o.order_id GROUP BY ROLLUP (o.customer_id, oi.product_id) HAVING MONTHS_BETWEEN(order_ date,SYSDATE)<=6;
C. SELECT o.customer_id, oi.product_id, SUM(oi.unit_price*oi. quantity) "Total FROM order_items oi JOIN orders o ON oi.order_id=o.order_id GROUP BY ROLLUP (o.customer_id, oi.product_id) WHERE MONTHS_BETWEEN(order_ date,SYSDATE)>=6;
D. SELECT o.customer_id, oi.product_id, SUM(oi.unit_price*oi. quantity) "Total FROM order_items oi JOIN orders o ON oi.order_id=o.order_id WHERE MONTHS_BETWEEN(order date,SYSDATE)<=6 GROUP BY ROLLUP (o.customer_id, oi.product_id);
Answer: D
Q5. Which statements are true? (Choose all that apply.)
A. The data dictionary is created and maintained by the database administrator.
B. The data dictionary views can consist of joins of dictionary base tables and user-defined tables.
C. The usernames of all the users including the database administrators are stored in the data dictionary.
D. The USER_CONS_COLUMNS view should be queried to find the names of the columns to which a constraint applies.
E. Both USER_OBJECTS and CAT views provide the same information about all the objects that are owned by the user.
F. Views with the same name but different prefixes, such as DBA, ALL and USER, use the same base tables from the data dictionary
Answer: CDF
Q6. 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
Q7. Evaluate the following query: SELECT INTERVAL 300' MONTH,
INTERVAL 54-2' YEAR TO MONTH,
INTERVAL '11:12:10.1234567' HOUR TO SECOND
FROM dual;
What is the correct output of the above query?
A. +25-00, +54-02,+00 11:12:10.123457
B. +00-300, +54-02,+00 11:12:10.123457
C. +25-00,+00-650,+00 11:12:10.123457
D. +00-300,+00-650,+0011:12:10.123457
Answer: A
Q8. View the Exhibit and examine the structure of the ORDERS table. The ORDER_ID column is the
PRIMARY KEY in the ORDERS table.
Evaluate the following CREATE TABLE command:
CREATE TABLE new_orders(ord_id, ord_date DEFAULT SYSDATE, cus_id)
AS
SELECT order_id.order_date,customer_id
FROM orders;
Which statement is true regarding the above command?
A. The NEW_IDRDERS table would not get created because the DEFAULT value can not be specified in the column definition.
B. The NEW_IDRDERS table would get created and only the NOTNULL constraint defined on the specified columns would be passed to the new table.
C. The NEW_IDRDERS table would not get created because the column names in the CREATE TABLE commandand the SELECT clause do not match.
D. The NEW_IDRDERS table would get created and all the constraints defined on the specified columns in the ORDERS table would be passed to the new table.
Answer: B
Q9. Evaluate the following CREATE TABLE command:
CREATE TABLE order_item (order_id NUMBER(3),
Item_id NUMBER(2),
qty NUMBER(4),
CONSTRAINT ord_itm_id_pk
PRIMARY KEY (order_id jtem_id)
USING INDEX
(CREATE INDEX ord_itm_idx
ON order_item(order_id item_id)));
Which statement is true regarding the above SOL statement?
A. Itwould execute successfullyandonly ORD_ITM_IDX index would be created.
B. It would give an error because the USING INDEX clause cannot be used onacomposite primarykey.
C. It wouldexecutesuccessfully and two indexes ORD_ITM_IDXand ORD_ITM_ID_PKwould becreated.
D. Itwould give an error becausetheUSING INDEX clause isnotpermitted in the CREATETABLEcommand.
Answer: A
Q10. In which scenario would you use the ROLLUP operator for expression or columns within a GROUP BY clause?
A. to find the groups forming the subtotal in a row
B. to create group-wise grand totals for the groups specified within a GROUP BY clause
C. to create a grouping for expressions or columns specified within a GROUP BY clause in one direction, from right to left for calculating the subtotals
D. to create a grouping for expressions or columns specified within a GROUP BY clause in all possible directions, which is cross-tabular report for calculating the subtotals
Answer: C
Q11. 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
Q12. Evaluate the following command:
CREATE TABLE employees
(employee_id NUMBER(2) PRIMARY KEY,
last_name VARCHAR2(25) NOT NULL,
department_id NUMBER(2), job_id VARCHAR2(8),
salary NUMBER(10,2));
You issue the following command to create a view that displays the IDs and last names of the sales staff in the organization:
CREATE OR REPLACE VIEW sales_staff_vu AS
SELECT employee_id, last_name job_id
FROM employees
WHERE job_id LIKE 'SA_%' WITH CHECK OPTION;
Which statements are true regarding the above view? (Choose all that apply.)
A. It allows you to insert details of allnewstaff into the EMPLOYEES table.
B. Itallowsyou todeletethedetails of the existing sales staff fromtheEMPLOYEES table.
C. It allows you to updatethejob ids oftheexisting sales staff to any other job id in the EMPLOYEES table.
D. It allows you to insert the IDs, last names and job ids of the sales staff from theviewif it is used in multitable INSERT statements.
Answer: BD
Q13. 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
Q14. View the Exhibit and examine the description of the ORDERS table.
You need to display CUSTOMER_ID for all customers who have placed orders more than three times in the last six months. You issued the following SQL statement:
SELECT customer_id,COUNT(order_id) FROM orders WHERE COUNT(order_id)>3 AND order_date BETWEEN ADD_MONTHS(SYSDATE,-6) AND SYSDATE GROUP BY customer_id;
Which statement is true regarding the execution of the above statement?
A. It would execute successfully and provide the desired result.
B. It would not execute because the WHERE clause cannot have an aggregate function.
C. It would not execute because the ORDER_ID column is not included in the GROUP BY clause.
D. It would not execute because the GROUP BY clause should be placed before the WHERE clause.
Answer: B
Q15. Which two statements are true regarding constraints? (Choose two.)
A. A foreign key cannot contain NULL values.
B. A column with the UNIQUE constraint can contain NULL.
C. A constraint is enforced only for the INSERT operation on a table.
D. A constraint can be disabled even if the constraint column contains data.
E. All the constraints can be defined at the column level as well as the table level
Answer: BD