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Latest and Most Accurate Oracle 1z0-071 Dumps Exam Questions and Answers:

Version: 7.0
Question: 21

Which statement is true about an inner join specified in the WHERE clause of a query?

A. It must have primary-key and foreign key constraints defined on the columns used in the join condition.
B. It requires the column names to be the same in all tables used for the join conditions.
C. It is applicable for equijoin and nonequijoin conditions.
D. It is applicable for only equijoin conditions.

Answer: C

Question: 22

Which statement is true regarding the INTERSECT operator?

A. It ignores NULL values
B. The number of columns and data types must be identical for all SELECT statements in the query
C. The names of columns in all SELECT statements must be identical
D. Reversing the order of the intersected tables the result

Answer: B

INTERSECT Returns only the rows that occur in both queries’ result sets, sorting them and removing duplicates.
The columns in the queries that make up a compound query can have different names, but the output result set will use the names of the columns in the first query.

Question: 23

Which statement correctly grants a system privilege?

ON prod
ON tablel TO
TO used ,user2;

Answer: C

Question: 24

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?

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_total FROM 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

Question: 25

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: A,B,D

Question: 26

View the Exhibit and examine the description of the DEPARTMENTS and EMPLOYEES tables.

To retrieve data for all the employees for their EMPLOYEE_ID, FIRST_NAME, and DEPARTMENT NAME, the following SQL statement was written:
SELECT employee_id, first_name, department_name
FROM employees NATURAL JOIN departments;
The desired output is not obtained after executing the above SQL statement. What could be the reason for this?

A. The NATURAL JOIN clause is missing the USING clause.
B. The table prefix is missing for the column names in the SELECT clause.
C. The DEPARTMENTS table is not used before the EMPLOYEES table in the FROM clause.
D. The EMPLOYEES and DEPARTMENTS tables have more than one column with the same column name and data type.

Answer: D

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