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Oracle 1z0-071 Practice Test Questions, Oracle 1z0-071 Exam Practice Test Questions

The Oracle 1z0-071 exam is required for obtaining several certifications provided by the Oracle University, namely Oracle PL/SQL Developer Certified Associate, Oracle Database 12c Administrator Certified Associate, and Oracle Database SQL Certified Associate. This test validates the candidates’ competency in Oracle SQL as well as PL/SQL technologies.

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Oracle 1z1-071 Exam consists of 73 multiple-choice questions that must be completed in 100 minutes. The questions are designed to test the candidate's understanding of SQL and its various functions. 1z0-071 exam covers topics such as creating and managing tables, manipulating data, using SQL functions, and controlling user access to data. 1z0-071 Exam also covers the basics of SQL syntax and how to write SQL statements.

Oracle Database SQL Sample Questions (Q51-Q56):

NEW QUESTION # 51
Evaluate the following CREATE TABLEcommand:

Which statement is true regarding the above SQL statement?

A. It would execute successfully and only ORD_ITM_IDX index would be created.
B. It would give an error because the USING INDEX clause cannot be used on a composite primary.
C. It would execute successfully and two indexes ORD_ITM_IDX and ORD_ITM_ID_PK would be created.
D. It would give an error because the USING INDEX clause is not permitted in the CREATE TABLE command.

Answer: A

NEW QUESTION # 52
Examine the description of the CUSTONERS table

CUSTON is the PRIMARY KEY.
You must derermine if any customers'derails have entered more than once using a different costno,by listing duplicate name Which two methode can you use to get the requlred resuit?

A. RIGHT OUTER JOIN with seif join
B. LEFT OUTER JOIN with seif join
C. SUBQUERY
D. seif join
E. FULL OUTER JOIN with seif join

Answer: C,D

NEW QUESTION # 53
Which three statements are true about the Oracle join and ANSI Join syntax?

A. The Oracle join syntax supports creation of a Cartesian product of two tables.
B. The Oracle join syntax only supports right outer joins,
C. The SQL:1999 compliant ANSI join syntax supports natural joins.
D. The Oracle join syntax performs better than the SQL:1999 compliant ANSI join syntax.
E. The SQL:1999 compliant ANSI join syntax supports creation of a Cartesian product of two tables.
F. The Oracle join syntax performs less well than the SQL:1999 compliant ANSI Join Answer.
G. The Oracle join syntax supports natural joins.

Answer: A,C,E

Explanation:
Regarding Oracle join and ANSI join syntax:
B . The Oracle join syntax supports the creation of a Cartesian product of two tables. This is true. In Oracle, if you list tables in the FROM clause without a join condition, it creates a Cartesian product.
C . The SQL:1999 compliant ANSI join syntax supports natural joins. This is true. ANSI syntax supports natural joins, which join tables based on columns with the same names in the joined tables.
F . The SQL:1999 compliant ANSI join syntax supports the creation of a Cartesian product of two tables. This is true. The ANSI standard allows for Cartesian products when tables are listed in the FROM clause without a join condition.
Options A, D, E, and G are incorrect:
A is incorrect because the Oracle join syntax supports all types of joins, including right outer joins.
D is incorrect because Oracle's proprietary join syntax does not use the term "natural join." E is incorrect because there is no inherent performance difference between Oracle join syntax and ANSI join syntax; performance depends on how the query is written and how the database optimizer handles it.
G is incorrect for the same reason as E.

NEW QUESTION # 54
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. Both the statements execute and give the same result
C. Only the first SQL statement executes successfully
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
D. Only the second SQL statement executes successfully

Answer: A

NEW QUESTION # 55
Examine the structure of the ORDERS table: (Choose the best answer.)

You want to find the total value of all the orders for each year and issue this command:
SQL> SELECT TO_CHAR(order_date,'rr'),
SUM(order_total) FROM orders
GROUP BY TO_CHAR(order_date, 'yyyy');
Which statement is true regarding the result?

A. It executes successfully but does not give the correct output.
B. It return an error because the datatype conversion in the SELECT list does not match the data type conversion in the GROUP BY clause.
C. It returns an error because the TO_CHAR function is not valid.
D. It executes successfully and gives the correct output.

Answer: B

NEW QUESTION # 56
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