1Z0-909 Exam Info and Free Practice Test All-in-One Exam Guide Mar-2023

Pass Oracle 1Z0-909 Actual Free Exam Q&As Updated Dump Mar 18, 2023

NEW QUESTION 36
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 date () to CURRENT_TIMESTAMP () .
• B. Change DATE () to DAY ().
• C. Change "O'Hagen" to "O\'Hagen".
• D. Change " NULL " to ' NULL ' .
• E. Change " NULL " to NULL.
• F. Change "O'Hagen" to 'o\'Hagen'.

Answer: B,E

 

NEW QUESTION 37
Examine this statement which executes successfully:

The table is populated with a range of values including jobs for Robert, John, and Katie. Now, examine this statement and output:

Why is an empty result set returned?

• A. The json_extract() function requires a length value that matches the field length in the schema.
• B. The JSON datatype cannot be used in virtual columns.
• C. The select requires json_unquoteo in the where clause.
• D. The virtual values in the name column must be accessed using functions.
• E. Table statistics must be updated to generate values for the name column.

Answer: B

 

NEW QUESTION 38
Which two statements are true about AUTO_INCREMENT?

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

Answer: D,E

 

NEW QUESTION 39
You must write a statement that combines the first_name and last_name columns from the employees table as "last_name, first_name." Which two statements will do this?

• A. SELECT CONCAT(last name,', ',first_name) FROM employees;
• B. SELECT last_name + ', ' + first_name FROM employees;
• C. SELECT CONCAT_WS(', ',last_name,first_name) FROM employees;
• D. SELECT last_name, ' , ',first_name FROM employees;
• E. SELECT GROUP_CONCAT(last_name, first_name) FROM employees;

Answer: B,E

 

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. Existing emp_vuL is dropped and a new emp_vu1 created with the new definition.
• C. A new view is created because the previous was dropped on execution of the drop table statement.
• D. It returns an error because the CREATE TABLE statement automatically recreated the view.

Answer: A

 

NEW QUESTION 41
Examine the employee table structure:

Which set of statements immediately returns empname for a given emp_id by using a parameterized prepare statement?
A)



D)

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

Answer: C

 

NEW QUESTION 42
Examine this statement:

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

Answer: D

 

NEW QUESTION 43
The collection col contains all episodes for all seasons for a TV show.
Examine this document which has an example of the details for each episode:

Which query returns all expisode names from the first season?

• A. SELECT name FROM col WHERE season = 1;
• B. SELECT "S.name" FROM col WHERE "S.season" = "1";
• C. SELECT doc->,$.name,, FROM col WHERE doc->"$ . season" = "1";
• D. SELECT doc->"$.name" FROM col WHERE doc->"$.season" = "1";

Answer: B

 

NEW QUESTION 44
The variables c and d are declared as integer types.
Examine these initialization statements with placeholder value <p1>, which execute successfully:
Now, examine this loop which executes successfully:

Which loop results in the same value of d for all valid values of <p1>?
A)

B)

C)

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

Answer: B

 

NEW QUESTION 45
Which two are true about MySQL connectors?

• A. Connector/NET runs on the Windows platform only.
• B. Connector/Python is released in precompiled binary and source code.
• C. Connector/ODBC is available on Unix, Windows, and MacOS X.
• D. Connectors must be installed on both the client and server hosts.
• E. Connector/J is based on Connector/C.

Answer: D,E

 

NEW QUESTION 46
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: B

 

NEW QUESTION 47
Examine this statement which executes successfully:
CREATE TABLE 'fshop' ('product' JSON DEFAULT NULL ) ENGINE=InnoDB;
Now, examine a json value contained in the table:
{"name" : "orange", "varieties" : [{"VarietyName":"Clementine", "Origin" : ["PA", "BU"] }, {"VarietyName": "tangerine", "Origin" : ["CH","JP"]>]> Which will cause documents to be indexed over the 'name' key?

• A. ALTER TABLE fshop ADD COLUMN name VARCHAR(100) AS (product->' S - varieties' ) VIRTUAL, ADD KEY idx_name (name) ;
• B. ALTER TABLE fshop ADD COLUMN name VARCHAR(20), ADD KEY idx_name (name) ;
• C. ALTER TABLE fshop ADD COLUMN name VARCHAR(20) AS (product-
  >* S .varieties. VarietyName ' ) VIRTUAL, ADD KEY idx_name (name.) ;
• D. ALTER TABLE fshop ADD name VARCHAR(20) AS (JSON_ONQUOTE (product->"S.varieties.VarietyName")), ADD INDEX (name);
• E. ALTER TABLE fshop ADD COLUMN name VARCHAR(20) AS (product->' S - name' ) VIRTUAL, ADD KEY idx_name (name) ;

Answer: A

 

NEW QUESTION 48
Examine the employee table structure:

Which set of statements immediately returns empname for a given emp_id by using a parameterized prepare statement?
A)



D)

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

Answer: B

 

NEW QUESTION 49
Examine these statements and output:

Now, examine this command:
Mysql> ROLLBACK;
What is true about the effect of the command?

• A. It undoes the insert command.
• B. It has no effect.
• C. It returns an error because there is no active transaction.
• D. It undoes the update command.
• E. It undoes both insert and update commands.

Answer: A

 

NEW QUESTION 50
Examine this statement and output:

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

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

Answer: D

 

NEW QUESTION 51
Examine these commands and output:


Which is true about the execution of the insert statement?

• A. It inserts a new row in the view only.
• B. It inserts a new row in the base table only.
• C. It inserts a row in the view and base table.
• D. It returns an error.

Answer: A

 

NEW QUESTION 52
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 A
• B. Option D
• C. Option B
• D. Option C

Answer: C

 

NEW QUESTION 53
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: E

 

NEW QUESTION 54
The employee table includes these columns:
e_id INT, e_name VARCHAR (45), dept_id INT salart INT
You must create a stored function, getMaxSalary(), which returns the maximum salary paid for a given department id.
Which statement will create the function?
A)

B)

C)

D)

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

Answer: B

 

NEW QUESTION 55
Examine these statements:
SET collation_connection=utf8mb4_0900_as_cs;
SELECT STRCMPCAlice', UCASE ('Alice* )) ;
What is displayed?

• A. 0
• B. ERROR: 1267 (HYOOO): Illegal mix of collations
• C. 1
• D. 2
• E. NULL

Answer: D

 

NEW QUESTION 56
The meeting table stores meeting schedules with participants from five continents. The participants' details are stored in another table.

You need to adjust the start_time and duration columns for optimal storage. What datatype changes would achieve this?

• A. start_time TIME duration TIME
• B. start_time DATETIME duration DATETIME
• C. start__time DATETIME duration TIME
• D. start_time TIMESTAMP duration TIME
• E. start_time TIMESTAMP duration TIMESTAMP

Answer: B

 

NEW QUESTION 57
Examine the statement which executes successfully:
SET sql_mode=' NO_ENGINE_SUBSTITTJTION' ;
You try to create a table with a storage engine that is not available. What will happen?

• A. An error occurs and the create table statement fails.
• B. The server will create the table using the default storage engine.
• C. The server will create the table but report an error when the first attempt to insert a row is performed.
• D. The server will create the table but it will be unusable until the specified storage engine is available.

Answer: A

 

NEW QUESTION 58
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. Upgrade the connector to a version that supports caching_sha2_password.
• C. Place this in the root directory of your shell account:
  [mysqld] require__secure_transport=OFF
• D. Disable TLS/SSL authentication.
• E. Use blank RSA or SSL certificates.

Answer: B

 

NEW QUESTION 59
You must reclaim memory used by a prepared statement named prep. Which two achieve this?

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

Answer: A,D

 

NEW QUESTION 60
Examine this bar graph based on columns from the players table:

Which two statements would generate this bar graph?

• A. SELECT Name, Gender, Sport, CHAR_LENGTH ('# ' GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;
• B. SELECT Name, Gender, Sport, CONCAT ('# ' GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;
• C. SELECT Name, Gender, Sport, RPAD ('# ' GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;
• D. SELECT Name, Gender, Sport, LENGTH (GPA*10, '# ') AS GPA_Graph FROM players ORDER BY GPA DESC;
• E. SELECT Name, Gender, Sport, REPEAT('# 'Y GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;

Answer: C,E

 

NEW QUESTION 61
......

Oracle 1Z0-909 Exam Syllabus Topics:

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

 

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