Try Free and Start Using Realistic Verified 1Z0-909 Dumps Instantly [Q19-Q44]

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1Z0-909 Actual Questions - Instant Download 66 Questions

NEW QUESTION 19
You are using buffered queries with PHP mysqli in a browser-based web application. Which three are true?

• A. Additional queries on the same session are blocked until the result set is released.
• B. Results are sent from the server to the browser for buffering.
• C. Buffered queries must be explicitly enabled using mysqliuseresult.
• D. Buffered queries should be used on large tables when the result size is unknown.
• E. Buffered queries are enabled by default.
• F. Large results can have a negative impact on performance.
• G. Results are sent to the calling PHP process for buffering.

Answer: C,D,F

 

NEW QUESTION 20
Examine these statement which execute successfully:

Now, examine the statements executed in the mysqi command-line client:

What is true?

• A.
• B.
• C.
• D.

Answer: B

 

NEW QUESTION 21
Examine these statements which execute successfully:

The statements executed without exception. Which two are true?

• A. Two transactions commit.
• B. One row is inserted into band.
• C. The transaction is rolled back to the savepoint.
• D. No row is inserted into band.
• E. No transaction commits.

Answer: B,E

 

NEW QUESTION 22
Examine the layout of the my_values table.

Examine the data in the my_value3 table.

Examine this statement:

A)

B)


D)

• A. Option C
• B. Option A
• C. Option D
• D. Option B

Answer: D

 

NEW QUESTION 23
Your program which uses a MySQL connector receives this error:
Client does not support authentication protocol request by server
The account running the program uses caching_sha2_password.
Which two resolve this conflict?

• A. Change the user account to use mysql_native_password.
• B. Disable TLS/SSL authentication.
• C. Upgrade the connector to a version that supports caching_sha2_password.
• D. Place this in the root directory of your shell account:
  [mysqld] require__secure_transport=OFF
• E. Use blank RSA or SSL certificates.

Answer: A,C

 

NEW QUESTION 24
Examine these statement which execute successfully:

Now, examine the statements executed in the mysqi command-line client:

What is true?
A)

B)

C)

D)

• A. Option B
• B. Option A
• C. Option D
• D. Option C

Answer: D

 

NEW QUESTION 25
Examine these commands which execute successfully in the sequence shown in Sessions S1 and S2:

Now, examine this statement that execute successfully in s1:
S1> SELECT * FROM emp;
Which is true about the result of the select statement?

• A. The inserted row is returned because the isolation level is RPEATABLE READ in S1.
• B. The inserted row is not returned because the transaction still active in s2.
• C. The inserted row is returned because the transaction is auto committed in S2.
• D. The inserted row is not returned because the isolation level is READ COMMITTED in S2.

Answer: C

 

NEW QUESTION 26
Examine this statement that execute successfully in an interactive session:

The user running this session now goes to lunch for an hour.
Now, examine these statements executed independently in separate sessions while Session 0 is still active:

How many of them will complete while Session 0 is still active?

• A. 0
• B. 1
• C. 2
• D. 3
• E. 4
• F. 5

Answer: A

 

NEW QUESTION 27
Which two are true about indexes?

• A. Indexing all of a table's columns improves performance.
• B. Indexes contain rows sorted by key values.
• C. Indexes reduce disk space used.
• D. Indexes are used to enforce unique constraints.
• E. Secondary index access will always be faster than a table scan.

Answer: A,C

 

NEW QUESTION 28
Your session has sqi_mode set to default.
Examine this statement which executes successfully:

Now examine this statement:

Which two changes are required to the insert statement so that it inserts the correct data?
* std_id = 10301
* firstname = Mary
* lastname = O'Hagen
* birthdate = November 26, 1997
* reg_date = the current date

• A. Change " NULL " to NULL.
• B. Change DATE () to DAY ().
• C. Change "O'Hagen" to 'o\'Hagen'.
• D. Change date () to CURRENT_TIMESTAMP () .
• E. Change "O'Hagen" to "O\'Hagen".
• F. Change " NULL " to ' NULL ' .

Answer: A,B

 

NEW QUESTION 29
Examine this statement and output:

You execute this statement:
SELECT JSON_SEARCH(product,'one','IT') FROM fshop ;
What is the output?

• A. product->varieties[3]. origin[0]''
• B. ''$.varieties [3]. origin[0]''
• C. product->''$.varieties [4]. origin[1];;
• D. ''$.varieties[4]. origin[1]''

Answer: C

 

NEW QUESTION 30
Examine the content of the employee table:

Now examine this PHP script:

Finally examine this desired output:

• A. $options = [PDO:: ATTR_DEFAULT_FETCH__MODE => PDO: : FETCH_ASSOC] ;
• B. $options = [PDO:: ATTR__DEFAULT_FETCH MODE => PDO: :FETCH_CLASS] ;
• C. $options = [PDO:: ATTR_DEFAOLT_FETCH__MODE => PDO : : FETCH_BOTH] ;
• D. $options = [PDO:: ATTR_DEFAUXT_FETCH__MODE => PDO: : PDO: :FETCH_OBJ] ;

Answer: C

 

NEW QUESTION 31
Which statement is true about the show errors command?

• A. It displays errors messages only, since the start time of the current session.
• B. It displays the total number of errors, warnings, and notes since the beginning of the current session.
• C. It cannot display information for more than max_errot_count server system variable setting.
• D. It displays similar diagnostics results as get diagnostics.
• E. It displays errors messages only, since the server last restarted.
• F. It displays the total number of errors, warnings, and notes since the server last restarted.

Answer: B

 

NEW QUESTION 32
Examine this statement and output:

What causes the error?

• A. The database server process does not have sufficient privilege.
• B. The database client process does not have sufficient privilege.
• C. The engine is disabled.
• D. The database user does not have sufficient privilege.
• E. The database server is running in read-only mode.
• F. The set local_infile option has not been enabled.

Answer: A

 

NEW QUESTION 33
How does InnoDB choose deadlock victims in MySQL?

• A. It chooses the transaction with the most accumulated CPU time.
• B. It chooses the transaction randomly.
• C. It chooses the transaction with the least accumulated CPU time.
• D. It chooses the transaction with the lowest transaction ID.
• E. It chooses the transaction with the fewest modified rows.
• F. It chooses the transaction with the most modified rows.

Answer: B

 

NEW QUESTION 34
Examine this statement:

• A. user who creates the procedure needing the create routine privilege
• B. inserting USE <database >; before line 3
• C. Inserting DEFINER 'username '@' localhost' clause into the CREATE PROCEDURE statement
• D. Inserting COMMIT; SET @m :=: before line 4
• E. user who creates the procedure needing the create and execute privileges

Answer: C

 

NEW QUESTION 35
Examine these my.cnf settings:

Examine this entry from /data/slow.log

Which option is also set in my.cnf?

• A. log_queries_not_using_indexes
• B. log_queries_not_using_indexes=ON
• C. log_throttle_queries_not_using_indexes=100
• D. log__slow_admin_statements=1

Answer: D

 

NEW QUESTION 36
You must reclaim memory used by a prepared statement named prep. Which two achieve this?

• A. DROP PROCEDURE prep;
• B. SET @a = ''; EXECUTE prep USING @a;
• C. DEALLOCATE PREPARE prep?
• D. SET @prep = NULL;
• E. DROP PREPARE prep;
• F. PREPARE prep FROM '';

Answer: A,D

 

NEW QUESTION 37
Which two statements are true about AUTO_INCREMENT?

• A. AUTO_INCREMENT values allocated to a transaction that is rolled back are not reused.
• B. A server restart always resets the AUTO_INCREMENT value to largest value in the AUTO_INCREMENT column plus 1.
• C. An AUTO_INCREMENT column must be indexed.
• D. A table can have multiple AUTO_INCREMENT columns.
• E. The decimal data type supports AUTO_INCREMENT.

Answer: A,C

 

NEW QUESTION 38
Examine this statement and output:

Which will provide the same level of detail when the error is encountered within a stored routine?
A)

B)

C)

D)

• A. Option B
• B. Option A
• C. Option D
• D. Option C

Answer: D

 

NEW QUESTION 39
Examine the Test.php script which is numbered for clarity, and its output:

PHP Fatal error: Uncaught Error: call to underined function mysqli_connect () in Test.php:2 Which action will fix this error?

• A. Replace line 2 With: Slink = mysql_xdevapi\getSession
  ("mysqlx://username:password@localhost:3306","schema");
• B. Install the PHP executable in the path used by the MySQL installation.
• C. Replace line 2 with Slink = mysql.connect {"localhost: 3306n, "username", "pas "schema") ;
• D. Enable the mysqli extension in the php.ini file.

Answer: A

 

NEW QUESTION 40
Examine these commands and output:

Which is true?

• A. It returns an error because the DROP TABLE statement did not drop the view.
• B. It returns an error because the CREATE TABLE statement automatically recreated the view.
• C. A new view is created because the previous was dropped on execution of the drop table statement.
• D. Existing emp_vuL is dropped and a new emp_vu1 created with the new definition.

Answer: D

 

NEW QUESTION 41
Examine these commands and output:

Which is true?

• A. It returns an error because the DROP TABLE statement did not drop the view.
• B. It returns an error because the CREATE TABLE statement automatically recreated the view.
• C. A new view is created because the previous was dropped on execution of the drop table statement.
• D. Existing emp_vuL is dropped and a new emp_vu1 created with the new definition.

Answer: A

 

NEW QUESTION 42
Examine the contents of these tables:

Now examine the expected results for a user with privileges to access the table:

Which query returns the expected results?
A)

B)

C)

D)

• A. Option C
• B. Option B
• C. Option A
• D. Option D

Answer: C

 

NEW QUESTION 43
What is an advantage of using mysqli in PHP programs rather than using PHP Data Objects (PDO)?

• A. mysqli supports non blocking, asynchronous queries.
• B. mysqli can access databases from other vendors.
• C. mysqli supports object oriented programming.
• D. mysqli includes X DevAPI functions.

Answer: C

 

NEW QUESTION 44
......

Oracle 1Z0-909 Exam Syllabus Topics:

Topic	Details
Topic 1	Use MySQL Shell to access document stores Retrieve data from the database by using a connector
Topic 2	Understand locking mechanisms within MySQL Control transactions in applications
Topic 3	Create and access a document store JSON and Document Store Store and process numeric data
Topic 4	Schedule database operations Store and process temporal data
Topic 5	Explain application development with NoSQL and XDevAPI Handle and interpret errors and warnings
Topic 6	Demonstrate connector use, management and configuration Secure credentials and connections
Topic 7	Rewrite queries for optimization Store and process string data
Topic 8	Create and execute stored routines MySQL Schema Objects and Data
Topic 9	Store and process spatial data Design, create, and alter views
Topic 10	Analyze queries for optimization Aggregate and summarize data Data-driven Applications

 

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