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Latest Update Oracle 1Z0-071 Exam Practice Questions and Answers Online Test

QUESTION 1
Which two statements are true regarding constraints? (Choose two)
A. A constraint is enforced only for an INSERT operation on a table.
B. A foreign key cannot contain NULL values.
C. A column with the UNIQUE constraint can store NULLS.
D. You can have more than one column in a table as part of a primary key.
Correct Answer: CD

QUESTION 2
Which statement is true regarding the default behavior of the ORDER BY clause?
A. In a character sort, the values are case-sensitive.
B. NULL values are not considered at all by the sort operation.
C. Only those columns that are specified in the SELECT list can be used in the ORDER BY clause.
D. Numeric values are displayed from the maximum to the minimum value if they have decimal positions.
Correct Answer: A

QUESTION 3
Which two are SQL features? (Choose two.)
A. processing sets of data
B. providing update capabilities for data in external files
C. providing graphical capabilities
D. providing variable definition capabilities
E. providing database transaction control
Correct Answer: AE
Reference: https://docs.oracle.com/database/121/TGSQL/tgsql_sqlproc.htm#TGSQL175
https://www.tutorialspoint.com/sql/sql-transactions.htm

QUESTION 4
Evaluate the following CREATE SEQUENCE statement: CREATE SEQUENCE seq1
START WITH 100 INCREMENT BY 10 MAXVALUE 200 CYCLE NOCACHE;
The sequence SEQ1 has generated numbers up to the maximum limit of 200. You issue the following SQL statement:
SELECT seq1.nextval FROM dual;
What is displayed by the SELECT statement?
A. 100
B. an error
C. 10
D. 1
Correct Answer: D

QUESTION 5
View the exhibits and examine the structures of the COSTS and PROMOTIONS tables.

Evaluate the following SQL statement:

What would be the outcome of the above SQL statement?
A. It displays prod IDs in the promo with the lowest cost.
B. It displays prod IDs in the promos with the lowest cost in the same time interval.
C. It displays prod IDs in the promos with the highest cost in the same time interval.
D. It displays prod IDs in the promos which cost less than the highest cost in the same time interval.
Correct Answer: D

QUESTION 6
Which two statements are true regarding multiple-row subqueries? (Choose two.)
A. They can contain group functions.
B. They always contain a subquery within a subquery.
C. They use the
D. They can be used to retrieve multiple rows from a single table only.
E. They should not be used with the NOT IN operator in the main query if NULL is likely to be a part of the result of the
subquery.
Correct Answer: AE

QUESTION 7
Which two statements are true about INTERVAL data types?
A. The YEAR field in an INTERVAL YEAR TO MONTH column must be a positive value.
B. INTERVAL DAY TO SECOND columns support fractions of seconds.
C. INTERVAL YEAR TO MONTH columns only support monthly intervals within a single year.
D. INTERVAL YEAR TO MONTH columns supports yearly intervals.
E. INTERVAL YEAR TO MONTH columns only support monthly intervals within a range of years.
F. The value in an INTERVAL DAY TO SECOND column can be copied into an INTERVAL YEAR TO MONTH column.
Correct Answer: BE
Reference: https://www.oracletutorial.com/oracle-basics/oracle-interval/

QUESTION 8
View the exhibit and examine the structures of the EMPLOYEES and DEPARTMENTS tables.

You want to update the EMPLOYEES table as follows:
Update only those employees who work in Boston or Seattle (locations 2900 and 2700).
Set department_id for these employees to the department_id corresponding to London (location_id 2100).
Set the employees\\’ salary in location_id 2100 to 1.1 times the average salary of their department.
Set the employees\\’ commission in location_id 2100 to 1.5 times the average commission of their department.
You issue the following command:

What is the outcome?
A. It generates an error because multiple columns (SALARY, COMMISSION) cannot be specified together in an
UPDATE statement.
B. It generates an error because a subquery cannot have a join condition in an UPDATE statement.
C. It executes successfully and gives the desired update
D. It executes successfully but does not give the desired update
Correct Answer: D

QUESTION 9
Examine the description of the EMPLOYEES table:

Examine this query:

Which line produces an error?
A. Line 5
B. Line 8
C. Line 7
D. Line 3
Correct Answer: D

QUESTION 10
The PRODUCTS table has the following structure.

Evaluate the following two SQL statements:
SQL>SELECT prod_id, NVL2 (prod_expiry_date, prod_expiry_date + 15, ` `) FROM products;
SQL>SELECT prod_id, NVL (prod_expiry_date, prod_expiry_date + 15) FROM products;
Which statement is true regarding the outcome?
A. Both the statements execute and give different results
B. Only the second SQL statement executes successfully
C. Both the statements execute and give the same result
D. Only the first SQL statement executes successfully
Correct Answer: A
Using the NVL2 Function The NVL2 function examines the first expression. If the first expression is not null, the NVL2 function returns the second expression. If the first expression is null, the third expression is returned. Syntax
NVL2(expr1, expr2, expr3) In the syntax: Expr1 is the source value or expression that may contain a null Expr2 is the value that is returned if expr1 is not null Expr3 is the value that is returned if expr1 is null

QUESTION 11
View the Exhibits and examine the structure of the COSTS and PROMOTIONS tables.
You want to display PROD_IDS whose promotion cost is less than the highest cost PROD_ID in a promotion time
interval.
Examine these SQL statements: What will be the result? Exhibit 1.

Exhibit 2.

A. It gives an error because the GROUP BY clause is not valid
B. It executes successfully but does not give the required result
C. It executes successfully and gives the required result
D. It gives an error because the ALL keyword is not valid
Correct Answer: C

QUESTION 12
Examine the description of the PRODUCT_STATUS table:

The STATUS column contains the values `IN STOCK\\’ or `OUT OF STOCK\\’ for each row. Which two queries will
execute successfully?

A. B. C. D. E. F.
Correct Answer: BE

QUESTION 13
Examine the structure of the BOOKS_TRANSACTIONS table:

You want to display the member IDs, due date, and late fee as $2 for all transactions. Which SQL statement must you
execute?
A. SELECT member_id AS MEMBER_ID, due_date AS DUE_DATE, $2 AS LATE_FEE FROM
BOOKS_TRANSACTIONS;
B. SELECT member_id \\’MEMBER ID\\’, due_date \\’DUE DATE\\’, \\’$2 AS LATE FEE\\’ FROM
BOOKS_TRANSACTIONS;
C. SELECT member_id AS “MEMBER ID”, due_date AS “DUE DATE”, \\’$2\\’ AS “LATE FEE” FROM
BOOKS_TRANSACTIONS;
D. SELECT member_id AS “MEMBER ID”, due_date AS “DUE DATE”, $2 AS “LATE FEE” FROM
BOOKS_TRANSACTIONS;
Correct Answer: C

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