[Dec 28, 2022] Latest Oracle 1Z0-909 Exam Practice Test To Gain Brilliante Result [Q16-Q38]

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Latest [Dec 28, 2022] Oracle 1Z0-909 Exam Practice Test To Gain Brilliante Result

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Oracle 1Z0-909 Exam Syllabus Topics:

Topic	Details
Topic 1	Schedule database operations Store and process temporal data
Topic 2	Resolve consistency problems with isolation levels Set SQL Modes to change MySQL behavior
Topic 3	Rewrite queries for optimization Store and process string data
Topic 4	Understand locking mechanisms within MySQL Control transactions in applications
Topic 5	Demonstrate connector use, management and configuration Secure credentials and connections
Topic 6	Analyze queries for optimization Aggregate and summarize data Data-driven Applications
Topic 7	Use MySQL Shell to access document stores Retrieve data from the database by using a connector
Topic 8	Store and process spatial data Design, create, and alter views
Topic 9	Explain the programming constructs used in stored routines Choose between connectors for a given application
Topic 10	Create and access a document store JSON and Document Store Store and process numeric data

Q16. 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)

Option A

Option B

Option C

Option D

Q17. 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?

Q18. 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)

Option A

Option B

Option C

Option D

Q19. 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?

The inserted row is returned because the transaction is auto committed in S2.

The inserted row is not returned because the isolation level is READ COMMITTED in S2.

The inserted row is not returned because the transaction still active in s2.

The inserted row is returned because the isolation level is RPEATABLE READ in S1.

Q20. Which two differences exist between the timestamp and date time data types?

timestamp has larger range of values.

timestamp uses less storage space.

timestamp stores more decimal points in seconds

timestamp converts the value based on the session time zone.

timestamp stores the interval between two dates.

Q21. Examine this statement and output:

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

Q22. You must reclaim memory used by a prepared statement named prep. Which two achieve this?

SET @a = ”; EXECUTE prep USING @a;

DEALLOCATE PREPARE prep?

DROP PROCEDURE prep;

SET @prep = NULL;

DROP PREPARE prep;

PREPARE prep FROM ”;

Q23. The continent column in the country table contains no null values.
Examine this output:

A)

B)

C)

D)

Option A

Option B

Option C

Option D

Q24. 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?

ALTER TABLE fshop ADD COLUMN name VARCHAR(20) AS (product-
>* S .varieties. VarietyName ‘ ) VIRTUAL, ADD KEY idx_name (name.) ;

ALTER TABLE fshop ADD COLUMN name VARCHAR(100) AS (product->’ S – varieties’ ) VIRTUAL, ADD KEY idx_name (name) ;

ALTER TABLE fshop ADD COLUMN name VARCHAR(20) AS (product->’ S – name’ ) VIRTUAL, ADD KEY idx_name (name) ;

ALTER TABLE fshop ADD COLUMN name VARCHAR(20), ADD KEY idx_name (name) ;

ALTER TABLE fshop ADD name VARCHAR(20) AS (JSON_ONQUOTE (product->”S.varieties.VarietyName”)), ADD INDEX (name);

Q25. Examine these statements issued from Session 1 which execute successfully:

Now, examine these statements issued from Session 2 which execute successfully:
Session 2>
BEGIN;
UPDATE band SET song=CONCAT (“Here Comes the “, song) WHERE song LIKE ‘ %Sun ; Which two are true?

Session 1 takes a shared lock on all the rows in the band table.

Session 1 must commit before the update in Session 2 can complete.

Session 1 does not block Session 2.

Statements in Session 2 are committed.

Session 2 takes an exclusive lock on all the rows in the band table.

Session 2 does not start a transaction.

Q26. Which two are true about indexes?

Secondary index access will always be faster than a table scan.

Indexing all of a table’s columns improves performance.

Indexes contain rows sorted by key values.

Indexes reduce disk space used.

Indexes are used to enforce unique constraints.

Q27. 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?

The select requires json_unquoteo in the where clause.

The virtual values in the name column must be accessed using functions.

The JSON datatype cannot be used in virtual columns.

The json_extract() function requires a length value that matches the field length in the schema.

Table statistics must be updated to generate values for the name column.

Q28. 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)

Option A

Option B

Option C

Option D

Q29. Examine the output:

Which explain command will obtain the output?

EXPLAIN ANALYZE

EXPLAIN PARTITIONS

EXPLAIN FORMAT=TREE

EXPLAIN PORMAT^TRADITIONAL

EXPLAIN PORMAT=JSON

Q30. Examine these statements issued from Session 1 which execute successfully:

Now, examine this statement issued from Session 2:

What is the outcome of the update statement in Session 2?

The row will be updated immediately.

The statement will wait for the transaction in Session 1 to finish.

A deadlock will occur.

The transaction in Session 1 will be rolled back automatically.

Q31. Examine these statements which execute successfully:

The statements executed without exception. Which two are true?

No transaction commits.

One row is inserted into band.

Two transactions commit.

No row is inserted into band.

The transaction is rolled back to the savepoint.

Q32. 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?

SELECT last_name + ‘, ‘ + first_name FROM employees;

SELECT CONCAT_WS(‘, ‘,last_name,first_name) FROM employees;

SELECT GROUP_CONCAT(last_name, first_name) FROM employees;

SELECT last_name, ‘ , ‘,first_name FROM employees;

SELECT CONCAT(last name,’, ‘,first_name) FROM employees;

Q33. Examine these statement which execute successfully:

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

What is true?

Q34. 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?

An error occurs and the create table statement fails.

The server will create the table but it will be unusable until the specified storage engine is available.

The server will create the table but report an error when the first attempt to insert a row is performed.

The server will create the table using the default storage engine.

Q35. 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?

Disable TLS/SSL authentication.

Place this in the root directory of your shell account:
[mysqld] require__secure_transport=OFF

Use blank RSA or SSL certificates.

Upgrade the connector to a version that supports caching_sha2_password.

Change the user account to use mysql_native_password.

Q36. You must enforce data integrity for data Inserted in a JSON column.
Which statement successfully creates a constraint in a 3SON column?

CREATE TABLE fshop (product JSON CHECK (JSON_VALID(product) ) ) ;

CREATE TABLE fshop ( product JSON, f INT’ GENERATED ALWAYS AS (product->”S – id”) ) ;

CREATE TABLE fshop (id INT NOT NULL AUTOINCREMENT, product JSON, PRIMARY KEY (id)) ENGINE=InnoDB;

CREATE TABLE fshop (id INT NOT NULL AUTO_ INCREMENT, product JSON, CHECK (id>0) ) ENGXNE=InnoDB;

Q37. Examine this statement and output:

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

product->”$.varieties [4]. origin[1];;

”$.varieties[4]. origin[1]”

product->varieties[3]. origin[0]”

”$.varieties [3]. origin[0]”

Q38. Examine the content of the employee table:

Now examine this PHP script:

Finally examine this desired output:

$options = [PDO:: ATTR_DEFAULT_FETCH__MODE => PDO: : FETCH_ASSOC] ;

$options = [PDO:: ATTR_DEFAUXT_FETCH__MODE => PDO: : PDO: :FETCH_OBJ] ;

$options = [PDO:: ATTR_DEFAOLT_FETCH__MODE => PDO : : FETCH_BOTH] ;

$options = [PDO:: ATTR__DEFAULT_FETCH MODE => PDO: :FETCH_CLASS] ;

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Oracle 1Z0-909 Exam Syllabus Topics:

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