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Q61. 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. CREATE INDEX ord_idx ON ord,ord_items(ord_no, ord_date,qty);
Q62. Which statements are true regarding the usage of the WITH clause in complex correlated subqueries? (Choose all that apply.)
A. It can be used only with the SELECT clause.
B. The WITH clause can hold more than one query.
C. If the query block name and the table name were the same, then the table name would take precedence.
D. The query name in the WITH clause is visible to other query blocks in the WITH clause as well as to the main query block.
Q63. The following are the steps for a correlated subquery, listed in random order:
1) The WHERE clause of the outer query is evaluated.
2) The candidate row is fetched from the table specified in the outer query.
3) The procedure is repeated for the subsequent rows of the table, till all the rows are processed.
4) Rows are returned by the inner query, after being evaluated with the value from the candidate row in the outer query. Identify the option that contains the steps in the correct sequence in which the Oracle server evaluates a correlated subquery.
Q64. 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);
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.
Q65. View the Exhibit and examine the description of the EMPLOYEES and DEPARTMENTS tables.
You want to display the LAST_NAME for the employees, LAST_NAME for the manager of the employees, and the DEPARTMENT_NAME for the employees having 100 as MANAGER_ID. The following SQL statement was written:
SELECT m.last_name "Manager", e.last_name "Employee", department_name "Department"
FROM employees m JOIN employees e
ON (m.employee_id = e.manager_id)
JOIN departments d
ON (e.department_id = d.department_id);
Which statement is true regarding the output of this SQL statement?
A. The statement would provide the desired results.
B. The statement would not execute because the ON clause is written twice.
C. The statement would not execute because the WHERE clause is wrongly placed.
D. The statement would not execute because the self join uses the ON clause instead of the USING clause.
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Q66. The first DROP operation is performed on PRODUCTS table using the following command:
DROP TABLE products PURGE;
Then you performed the FLASHBACK operation by using the following command:
FLASHBACK TABLE products TO BEFORE DROP;
Which statement describes the outcome of the FLASHBACK command?
A. It recovers only thetablestructure.
B. It recovers thetablestructure,data,andtheindexes.
C. It recovers thetablestructure anddatabutnotthe related indexes.
D. It is not possible to recover the table structure, data, or the related indexes.
Q67. View the Exhibit and examine the structure of the ORDERS table. Which task would require subqueries?
A. displaying the total order value for sales representatives 161 and 163
B. displaying the order total for sales representative 161 in the year 1999
C. displaying the number of orders that have order mode online and order date in 1999
D. displaying the number of orders whose order total is more than the average order total for all online orders
Q68. View the Exhibit and examine the description of the ORDERS table.
Which two WHERE clause conditions demonstrate the correct usage of conversion functions? (Choose two.)
A. WHERE order_date> TO_DATE('JUL 10 2006','MON DD YYYY)
B. WHERE TO_CHAR(order_date,'MONDDYYYY) = 'JAN 20 2003'
C. WHEREorder_date > TO_CHAR(ADD_MONTHS(SYSDATE,6),'MONDDYYYY")
D. WHERE order_dateIN(TO_DATE('Oct 21 2003','Mon DD YYYY"),TO_CHAR('NOV21 2003','Mon DD YYYY"))
Q69. Which two statements are true regarding subqueries? (Choose three.)
A. The ORDER BY clause can be used in the subquery.
B. A subquery can be used in the FROM clause of a SELECT statement.
C. If the subquery returns NULL, the main query may still return result rows.
D. A subquery can be placed in a WHERE clause, GROUP BY clause, or a HAVING clause.
E. Logical operators, such as AND, OR and NOT, cannot be used in the WHERE clause of a subquery.
Q70. 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)
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.