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Latest updates Oracle 1z0-071 exam practice questions
QUESTION 1
Examine the description of the BOOKS_TRANSACTIONS table:
Examine this partial SQL statement:
SELECT * FROM books_transactions
Which two WHERE conditions give the same result?
A. WHERE borrowed_date = SYSDATE AND (transaction_type = `RM\\’ OR member_id IN (`A101\\’, `A102\\’));
B. WHERE (borrowed_date = SYSDATE AND transaction_type = `RM\\’) OR member_id IN (`A101\\’, `A102\\’);
C. WHERE borrowed_date = SYSDATE AND (transaction_type = `RM\\’ AND (member_id = A101\\’ OR member_id =
`A102\\’));
D. WHERE borrowed_date = SYSDATE AND transaction_type = `RM\\’ OR member_id IN (`A101\\’, `A102\\’);
E. WHERE borrowed_date = SYSDATE AND (transaction_type = `RM\\’ AND member_id = `A101\\’ OR member_id =
`A102\\’);
Correct Answer: BC
QUESTION 2
Which three statements are true regarding subqueries? (Choose three.)
A. The ORDER BY Clause can be used in a subquery.
B. A subquery can be used in the FROM clause of a SELECT statement.
C. If a subquery returns NULL, the main query may still return rows.
D. A subquery can be placed in a WHERE clause, a GROUP BY clause, or a HAVING clause.
E. Logical operators, such as AND, OR, and NOT, cannot be used in the WHERE clause of a subquery.
Correct Answer: ABC
QUESTION 3
Which three statements are true reading subqueries? (Choose three.)
A. A-Main query can have many subqueries.
B. A subquery can have more than one main query.
C. The subquery and the main query must retrieve the date from the same table.
D. The subquery and main query can retrieve data from different tables.
E. Only one column or expression can be compared between the subquery and main query.
F. Multiple columns or expressions can be compared between the subquery and main query.
Correct Answer: ADF
QUESTION 4
A non-correlated subquery can be defined as __________. (Choose the best answer.)
A. A set of one or more sequential queries in which generally the result of the inner query is used as the search value in
the outer query.
B. A set of sequential queries, all of which must return values from the same table.
C. A set of sequential queries, all of which must always return a single value.
D. A SELECT statement that can be embedded in a clause of another SELECT statement only.
Correct Answer: A
QUESTION 5
Which two statements are true regarding the execution of the correlated subqueries? (Choose two.)
A. The nested query executes after the outer query returns the row.
B. The nested query executes first and then the outer query executes.
C. The outer query executes only once for the result returned by the inner query.
D. Each row returned by the outer query is evaluated for the results returned by the inner query.
Correct Answer: AD
QUESTION 6
You issue the following command to drop the PRODUCTS table:
SQL > DROP TABLE products;
Which three statements are true about the implication of this command? (Choose three.)
A. All data along with the table structure is deleted.
B. A pending transaction in the session is committed.
C. All indexes on the table remain but they are invalidated.
D. All views and synonyms on the table remain but they are invalidated.
E. All data in the table is deleted but the table structure remains.
Correct Answer: ABD
QUESTION 7
Examine the structure of the two tables.
Which two queries execute successfully? (Choose two.)
A. Option A
B. Option B
C. Option C
D. Option D
E. Option E
Correct Answer: CD
QUESTION 8
Which two statements are true about a full outer join?
A. It includes rows that are returned by an inner join.
B. It returns only unmatched rows from both tables being joined.
C. It includes rows that are returned by a Cartesian product.
D. It returns matched and unmatched rows from both tables being joined.
E. The Oracle joins operator (+) must be used on both sides of the join condition in the WHERE clause.
Correct Answer: AD
Reference: https://www.w3resource.com/oracle/joins/oracle-full-outer-join.php
QUESTION 9
The SQL statements executed in a user session are as follows:
Which two statements describe the consequences of issuing the ROLLBACK TO SAVEPOINT a command in the
session? (Choose two.)
A. The rollback generates an error.
B. No SQL statements are rolled back.
C. Only the DELETE statements are rolled back.
D. Only the second DELETE statement is rolled back.
E. Both the DELETE statements and the UPDATE statement are rolled back.
Correct Answer: AB
QUESTION 10
Examine the structure of the SHIPMENTS table:
Which statement is true regarding the above commands?
A. Both execute successfully and give correct results.
B. Only the first query executes successfully but gives the wrong result.
C. Only the first query executes successfully and gives the correct result.
D. Only the second query executes successfully but gives the wrong result.
E. Only the second query executes successfully and gives the correct result.
Correct Answer: C
QUESTION 11
Examine the description of the PRODUCT_INFORMATION table:
Which query retrieves the number of products with a full list price?
A. SELECT COUNT (DISTINCT list_price) FROM product_information WHERE list_price IS NULL;
B. SELECT COUNT (list_price) FROM product_information WHERE list_price IS NULL;
C. SELECT COUNT (list_price) FROM product_information WHERE list_price = NULL;
D. SELECT COUNT(NVL(list_price, 0)) FROM product_information WHERE list_price IS NULL;
Correct Answer: D
Reference: https://www.oracletutorial.com/oracle-aggregate-functions/oracle-avg/
QUESTION 12
Which statement is true about Enterprise Manager (EM) express in Oracle Database 12c?
A. By default, EM express is available for a database after database creation.
B. You can use EM express to manage multiple databases running on the same server.
C. You can perform basic administrative tasks for pluggable databases by using the EM express interface.
D. You cannot start-up or shut down a database Instance by using EM express.
E. You can create and configure pluggable databases by using EM express.
Correct Answer: A
QUESTION 13
Which two statements best describe the benefits of using the WITH clause? (Choose two.)
A. It can improve the performance of a large query by storing the result of a query block having the WITH clause in the
session\\’s temporary tablespace.
B. It enables sessions to reuse the same query block in a SELECT statement if it occurs more than once in a complex
query.
C. It enables sessions to store a query block permanently in memory and use it to create complex queries.
D. It enables sessions to store the results of a query permanently.
Correct Answer: AB
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