Online Access Free Oracle.1z0-071.v2022-02-07.q334 Practice Test (Page 53)

1z0-071 Exam Question 256

View the Exhibit and examine the structure of the EMP table which is not partitioned and not an index-organized table. (Choose two.)

Evaluate this SQL statement:
ALTER TABLE emp
DROP COLUMN first_name;
Which two statements are true?

A.The FIRST_NAME column would be dropped provided at least one column remains in the table.

B.The FIRST_NAME column would be dropped provided it does not contain any data.

C.The FIRST_NAME column can be dropped even if it is part of a composite PRIMARY KEY provided the CASCADE option is added to the SQL statement.

D.The drop of the FIRST_NAME column can be rolled back provided the SET UNUSED option is added to the SQL statement.

1z0-071 Exam Question 257

See the Exhibit and examine the structure of the PROMOTIONS table:

Using the PROMOTIONStable, you need to find out the average cost for all promos in the range $0-2000 and
$2000-5000 in category A.
You issue the following SQL statements:

What would be the outcome?

A.It generates an error because multiple conditions cannot be specified for the WHENclause.

B.It executes successfully and gives the required result.

C.It generates an error because CASEcannot be used with group functions.

D.It generates an error because NULLcannot be specified as a return value.

1z0-071 Exam Question 258

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(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);

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 orders
VALUES (1,'10-mar-2007', 'direct',
(SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND
credit_limit=600), 1000);

1z0-071 Exam Question 259

View the Exhibit and examine the structure of ORDERS and CUSTOMERS tables. (Choose the best answer.)

You executed this UPDATE statement:

Which statement is true regarding the execution?

A.It would not execute because a subquery cannot be used in the WHERE clause of an UPDATE statement.

B.It would execute and restrict modifications to the columns specified in the SELECT statement.

C.It would not execute because two tables cannot be referenced in a single UPDATE statement.

D.It would not execute because a SELECT statement cannot be used in place of a table name.

1z0-071 Exam Question 260

Which three queries execute successfully?

A.SELECT 1 - SYSDATE- DATE '2019-01-01' FROM DUAL;

B.SELECT SYSDATE - DATE '2019-01-01' - 1 FROM DUAL;

C.SELECT 1 / SYSDATE - DATE '2019-01-01' FROM DUAL;

D.SELECT (SYSDATE-DATE '2019-01-01') / 1 FROM DUAL;

E.SELECT SYSDATE / DATE '2019-01-01' - 1 FROM DUAL

F.SELECT SYSDATE - 1 - DATE'2019-01-01' EROM DUAL;

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1z0-071 Exam Question 256

1z0-071 Exam Question 257

1z0-071 Exam Question 258

1z0-071 Exam Question 259

1z0-071 Exam Question 260

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