1z1-071 Dumps 2025 New Oracle 1z1-071 Exam Questions [Q171-Q187]

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April 17, 2025

1z1-071 Dumps 2025 New Oracle 1z1-071 Exam Questions [Q171-Q187]

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1z1-071 Dumps 2025 – New Oracle 1z1-071 Exam Questions

Free 1z1-071 braindumps download (1z1-071 exam dumps Free Updated)

Oracle 1z1-071 exam covers a wide range of topics, including data retrieval using SELECT statements, data manipulation using DML statements, and database schema design. 1z1-071 exam also covers advanced SQL concepts such as subqueries, joins, and set operators. The test is designed to measure an individual’s ability to write effective SQL queries and to ensure they understand the underlying concepts.

Oracle 1z0-071 certification exam is suitable for individuals who work with databases, including database administrators, developers, and analysts. It is also suitable for IT professionals who want to enhance their knowledge and skills in SQL development and database management. Oracle Database SQL certification exam is recognized globally and is a valuable addition to any IT professional’s resume.

NO.171 You execute this query:
SELECT TO CHAR (NEXT_DAY(LAST_DAY(SYSDATE),’MON’ ),’ dd”Monday for” fmMonth rrr’) FROM DUAL; What is the result?

It executes successfully but does not return any result.

It returns the date for the first Monday of the next month.

It generates an error.

It returns the date for the last Monday of the current month.

NO.172 A session’s NLS_DATE_FORMAT is set to DD Mon YYYY.
Which two queries return the value 1 Jan 2019?

SELECT TO_DATE(‘2019-01-01’) FROM DUAL;

SELECT DATE ‘2019-01-01’ FROM DUAL;

SELECT ‘2019-01-01’ FROM DUAL;

SELECT TO_CHAR(‘2019-01-01’) FROM DUAL;

SELECT TO_DATE(‘2019-01-01’, ‘YYYY-MM-DD’) FROM DUAL;

select date’2015-01-10′ d from dual union
SELECT to_date( ’01-01-2007′ , ‘DD-MM-YYYY’) Tarih FROM dual;
Reference: https://livesql.oracle.com/apex/livesql/file/content_BFKOA5UQHDV1MV7HRUDDUEPM4.html
https://www.baskent.edu.tr/~tkaracay/etudio/ders/dbase/sql/pdfSQL/DateConversions.pdf

NO.173 Which three statements are true about indexes and their administration in an Oracle database?

An index can be created as part of a CREATE TABLE statement.

A DROP INDEX statement always prevents updates to the table during the drop operation.

A UNIQUE and non-unique index can be created on the same table column.

A descending index is a type of function-based index.

If a query filters on an indexed column then it will always be used during execution of the query.

An INVISIBLE index is not maintained when Data Manipulation Language (DML) is performed on its underlying table.

NO.174 Examine the data in the ORDERS table:

Examine the data in the INVOICES table:

Examine this query:
SELECT order_ id, order_ date FROM orders
INTERSECT
SELECT order_ 1d, order_ date FROM invoices;
Which two rows will it return?

3 <null>

2 <null>

1 <null>

5 01-MAR-2019

4 01-FEB-2019

3 01-JAN-2019

The INTERSECT operator in SQL returns the results that are common to both of the SELECT statements. It functions similarly to a set intersection in mathematics. When comparing rows for the INTERSECT operation, Oracle Database uses all the expressions in the SELECT lists to derive the result set. NULL values are considered equal for the INTERSECT operator.
Evaluating the provided data from the ORDERS and INVOICES tables, let’s see which rows have the same ORDER_ID and ORDER_DATE in both tables:
* A: Order ID 3 has a NULL order date in the ORDERS table and does not match with any row in the INVOICES table, so it will not be returned.
* B: Order ID 2 has a NULL order date in the ORDERS table but has a non-NULL order date in the INVOICES table, so it will not be returned.
* C: Order ID 1 has a NULL order date in both tables, but INTERSECT considers NULLs as equal, so
* this will be returned.
* D: Order ID 5 has a date of 01-MAR-2019 in the ORDERS table and 01-APR-2019 in the INVOICES table, so it will not be returned since the dates do not match.
* E: Order ID 4 has a date of 01-FEB-2019 in both tables, so this row will be returned as it matches in both.
* F: Order ID 3 has a NULL order date in the ORDERS table but has 01-JAN-2019 in the INVOICES table, so it will not be returned.
Based on this analysis, the query will return:
* Order ID 1 with a NULL order date.
* Order ID 4 with an order date of 01-FEB-2019.
So the correct answer is:

NO.175 View the Exhibit and examine the structure of the PRODUCTStable

Which two tasks would require subqueries? (Choose two.)

display all products whose PROD_MIN_PRICEis more than the average PROD_LIST_PRICEof all products, and whose status is orderable

display the total number of products supplied by supplier 102which have a product status as ‘OBSOLETE’

display the number of products whose PROD_LIST_PRICEis more than the average PROD_LIST_PRICE

display suppliers whose PROD_LIST_PRICEis less than 1000

display the minimum PROD_LIST_PRICEfor each product status

NO.176 View the exhibits and examine the structures of the COSTSand PROMOTIONStables.

Evaluate the following SQL statement:
SQL> SELECT prod_id FROM costs
WHERE promo_id IN (SELECT promo_id FROM promotions
WHERE promo_cost < ALL
( SELECT MAX(promo_cost) FROM promotions
GROUP BY (promo_end_date-
promo_begin_date)));
What would be the outcome of the above SQL statement?

It displays prod IDs in the promo with the lowest cost.

It displays prod IDs in the promos with the lowest cost in the same time interval.

It displays prod IDs in the promos with the highest cost in the same time interval.

It displays prod IDs in the promos which cost less than the highest cost in the same time interval.

NO.177 Which two statements are true about Oracle databases and SQL?

A user can be the owner of multiple schemas In the same database.

The database guarantees read consistency at select level on user-created tables.

Updates performed by a database user can be rolled back by another user by using the rollback command.

A query can access only tables within the same schema.

When you execute an update statement, the database Instance locks each updated row.

NO.178 View the Exhibit and examine the structure of the ORDERS table.
The columns ORDER_MODE and ORDER TOTAL have the default values'direct “and respectively.
Which two INSERT statements are valid? (Choose two.)

INSERT INTO (SELECT order_id, order date, customer_id FROM orders) VALUES (1, ’09-mar-2007″,101);

INSERT INTO orders (order_id, order_date, order mode,customer_id, order_total) VALUES (1, TO_DATE (NULL),’online’,101, NULL) ;

INSERT INTO orders VALUES (1, ’09-mar-2007′, ‘online’,’ ‘,1000);

INSERT INTO orders (order id, order_date, order mode, order_total)VALUES (1,’10-mar-2007′,’online’, 1000)

INSERT INTO orders VALUES(’09-mar-2007′,DEFAULT,101, DEFALLT);

Regarding valid INSERT statements into the ORDERS table:
B . This is a valid statement because it uses TO_DATE for potentially setting a NULL date and provides defaults implicitly where not specified, adhering to the column constraints and requirements.
D . This statement is correctly formatted and provides values for non-optional fields, using DEFAULT implicitly for unspecified optional fields.
Incorrect options:
A: The subquery format and values provided do not match the expected column count and types for direct insert.
C: Incorrect format due to an improper string for the ORDER_MODE and possibly incomplete values.
E: Incorrect syntax; DEFAULT should be correctly capitalized, and the value order and type must match the table structure.

NO.179 Examine the description of the EMPLOYEES table:

You write this failing statement:
SELECT dept_no AS department_id, MAX (salary) As max_sal
FROM employees
WHERE salary >10000
GROUP BY department_id
ORDER BY max_sal;
Which clause causes the error?

ORDER BY

WHERE

GROUP BY

SELECT

NO.180 Which three are true about privileges and roles? (Choose three.)

A role is owned by the user who created it.

A role can contain a combination of several privileges and roles.

System privileges always set privileges for an entire database.

A user has all object privileges for every object in their schema by default.

All roles are owned by the SYS schema.

PUBLICcan be revoked from a user.

PUBLIC acts as a default role granted to every user in a database.

Explanation/Reference: https://docs.oracle.com/cd/B19306_01/network.102/b14266/authoriz.htm#i1010570

NO.181 Which two statements are true regarding the EXISTSoperator used in the correlated subqueries?
(Choose two.)

The outer query stops evaluating the result set of the inner query when the first value is found.

It is used to test whether the values retrieved by the inner query exist in the result of the outer query.

It is used to test whether the values retrieved by the outer query exist in the result set of the inner query.

The outer query continues evaluating the result set of the inner query until all the values in the result set are processed.

Explanation/Reference:
References:
http://www.techonthenet.com/oracle/exists.php

NO.182 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?

RIGHT OUTER JOIN with seif join

FULL OUTER JOIN with seif join

SUBQUERY

seif join

LEFT OUTER JOIN with seif join

NO.183 You issue this command which succeeds:
SQL> DROP TABLE products;
Which three statements are true?

All existing views and synonyms that refer to the table are invalidated but retained.

Any uncommitted transaction in the session is committed.

Table data and the table structure are deleted.

All the table’s indexes if any exist, are invalidated but retained.

Table data is deleted but the table structure is retained.

NO.184 Examine the description of the PROMTIONS table:

You want to display the unique promotion costs in each promotion category.
Which two queries can be used?

SELECT promo_cost, | pxomo_category FROM promotions ORDER BY 1;

SELECT promo_category, DISTINCT promo_cost PROM promotions ORDER BY 2:

SELECT DISTINCT promo_category ||’has’|| promo_cost AS COSTS FROM promotions ORDER BY 1;

SELECT DISTINCT promo_category, promo_cost FROM promotions ORDER BY 1;

SELECT DISTINCT promo_cost ||’ in’ II DISTINCT promo_category FROM promotions ORDER BY 1;

NO.185 View the exhibit and examine the description of the DEPARTMENTS and EMPLOYEES tables.

You wrote this SQL statement to retrieve EMPLOYEE_ID, FIRST_NAME, and DEPARTMENT NAME, for all employees:
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?

The table prefix is missing for the column names in the SELECT clause.

The NATURAL JOIN clause is missing the USING clause.

The DEPARTMENTS table is not used before the EMPLOYEES table in the FROM clause.

The EMPLOYEES and DEPARTMENTS tables have more than one column with the same column name and data type.

Natural join needs only one column to be the same in each table. The EMPLOYEES and DEPARTMENTS tables have two columns that are the same (Department_ID and Manager_ID)

NO.186 View the Exhibit and examine the structure of the ORDERS table.

You must select ORDER_ID and ORDER_DATE for all orders that were placed after the last order placed by CUSTOMER_ID 101.
Which query would give you the desired result?

SELECT order_id, order_date FROM orders
WHERE order_date >
ANY
(SELECT order_date FROM orders WHERE customer_id = 101);

SELECT order_id, order_date FROM orders
WHERE order_date > ALL
(SELECT MAX(order_date) FROM orders ) AND customer_id = 101;

SELECT order_id, order_date FROM orders
WHERE order_date > ALL
(SELECT order_date FROM orders WHERE customer_id = 101);

SELECT order_id, order_date FROM orders
WHERE order_date > IN
(SELECT order_date FROM orders WHERE customer_id = 101);

NO.187 View the exhibits and examine the structures of the COSTSand PROMOTIONStables.

Evaluate the following SQL statement:

What would be the outcome of the above SQL statement?