Free Access Oracle.1z1-071.v2025-05-13.q352 Practice Test (Page 62)

Question 301

View the exhibit and examine the ORDERStable.

The ORDERStable contains data and all orders have been assigned a customer ID. Which statement would add a NOTNULLconstraint to the CUSTOMER_IDcolumn?

A.ALTER TABLE orders
MODIFY CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);

B.ALTER TABLE orders
MODIFY customer_id CONSTRAINT orders_cust_nn NOT NULL (customer_id);

C.ALTER TABLE orders
ADD CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);

D.ALTER TABLE orders
ADD customer_id NUMBER(6)CONSTRAINT orders_cust_id_nn NOT NULL;

Question 302

Which two statements are true regarding non equijoins?

A.The ON clause can be used.

B.The USING clause can be used.

C.The SQL:1999 compliant ANSI join syntax must be used.

D.Table aliases must be used.

E.The Oracle join syntax can be used.

Question 303

Evaluate the following ALTER TABLE statement:
ALTER TABLE orders
SET UNUSED (order_date);
Which statement is true?

A.The ORDER_DATE column must be empty for the ALTER TABLE command to execute successfully.

B.After executing the ALTER TABLE command, a new column called ORDER_DATE can be added to the ORDERS table.

C.The DESCRIBE command would still display the ORDER_DATE column.

D.ROLLBACK can be used to restore the ORDER_DATE column.

Question 304

Examine the data in the EMPLOYEES table:

Which statement will compute the total annual compensation for each employee?

A.select last _ name, (monthly_ salary * 12) + (monthly_ salary * 12 *monthly_ commission_ pct) AS annual_ camp FROM employees

B.SELECT last _ name, (monthly_ salary * 12) + (monthly_ salary * 12 * NVL (monthly_ commission _pct, 0)) AS annual _comp

C.SELECT last _ name, (monthly _ salary * 12) + (monthly_ commission _ pct * 12) AS FROM employees:

D.SELECT last _ NAME (monthly_ salary + monthly _commission _ pct) * 12 AS annual_ comp FROM employees;

Question 305

The following are the steps for a correlated subquery, listed in random order:
1. The WHEREclause of the outer query is evaluated.
2. The candidate row is fetched from the table specified in the outer query.
3. This 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.
Which is the correct sequence in which the Oracle server evaluates a correlated subquery?

A.2, 1, 4, 3

B.4, 1, 2, 3

C.4, 2, 1, 3

D.2, 4, 1, 3

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Question 301

Question 302

Question 303

Question 304

Question 305

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