[Dec-2022] Oracle 1Z0-909 Dumps – Reduce Your Chance of Failure in 1Z0-909 Exam [Q30-Q49]

1Z0-909 Oracle

admin • December 2, 2022

[Dec-2022] Oracle 1Z0-909 Dumps – Reduce Your Chance of Failure in 1Z0-909 Exam [Q30-Q49]

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[Dec-2022] Oracle 1Z0-909 Dumps – Reduce Your Chance of Failure in 1Z0-909 Exam

To help you achieve your ultimate goal, we suggest the actual Oracle 1Z0-909 dumps for your MySQL 8.0 Database Developer exam preparation to use as your guideline.

Q30. Examine these MySQL Shell statements:

What is the true about the attempts to add document to the collection?

All documents are added without any error or warning.

First three documents are added, then different number of fields cause an error.

First two documents are added, then mismatched field names cause an error.

First two documents are added, then mismatched field names cause a warning.

All documents are added and cause a warning.

Q31. 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?

Q32. Examine this statement and output:

Which is true?

The underlying table’s index on the Name column is not chosen because of low selectivity.

myview cannot be automatically indexed.

myview was defined with the temptable processing algorithm.

Column Name in myview can be indexed if the is_updatable attribute is true.

Q33. Examine these commands and output:

Which is true?

Existing emp_vuL is dropped and a new emp_vu1 created with the new definition.

A new view is created because the previous was dropped on execution of the drop table statement.

It returns an error because the CREATE TABLE statement automatically recreated the view.

It returns an error because the DROP TABLE statement did not drop the view.

Q34. 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?

Enable the mysqli extension in the php.ini file.

Replace line 2 with Slink = mysql.connect {“localhost: 3306n, “username”, “pas “schema”) ;

Replace line 2 With: Slink = mysql_xdevapigetSession
(“mysqlx://username:password@localhost:3306″,”schema”);

Install the PHP executable in the path used by the MySQL installation.

Q35. Examine these statement which execute successfully:

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

What is true?
A)

B)

C)

D)

Option A

Option B

Option C

Option D

Q36. 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.

Q37. Which statement is true about the show errors command?

It displays the total number of errors, warnings, and notes since the beginning of the current session.

It displays the total number of errors, warnings, and notes since the server last restarted.

It cannot display information for more than max_errot_count server system variable setting.

It displays errors messages only, since the start time of the current session.

It displays errors messages only, since the server last restarted.

It displays similar diagnostics results as get diagnostics.

Q38. Examine this bar graph based on columns from the players table:

Which two statements would generate this bar graph?

SELECT Name, Gender, Sport, REPEAT(‘# ‘Y GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;

SELECT Name, Gender, Sport, LENGTH (GPA*10, ‘# ‘) AS GPA_Graph FROM players ORDER BY GPA DESC;

SELECT Name, Gender, Sport, CHAR_LENGTH (‘# ‘ GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;

SELECT Name, Gender, Sport, RPAD (‘# ‘ GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;

SELECT Name, Gender, Sport, CONCAT (‘# ‘ GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;

Q39. Examine the structure of the emp table:

Examine the structure of the emp_vu1 view based on the emp table:

Now, examine this statement:
mysq1> INSERT INTO emp_vul VALUES (‘Alice’,20000) ;
What is true about executing the statement?

It inserts a row in the emp table.

It returns an error because an insert operation is not allowed on views.

It inserts a row in the view only.

It returns an error because the PRIMARY ACCOUNT column is not selected for the view definition.

Q40. Which two are true about MySQL connectors?

Connectors must be installed on both the client and server hosts.

Connector/J is based on Connector/C.

Connector/ODBC is available on Unix, Windows, and MacOS X.

Connector/NET runs on the Windows platform only.

Connector/Python is released in precompiled binary and source code.

Q41. 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]”

Q42. Examine these statements:
SET collation_connection=utf8mb4_0900_as_cs;
SELECT STRCMPCAlice’, UCASE (‘Alice* )) ;
What is displayed?

ERROR: 1267 (HYOOO): Illegal mix of collations

-1

NULL

Q43. 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

Q44. Which change will prevent negative ages to be inserted into the people table?

DELIMITER //
CREATE TRIGGER agecheck BEFORE INSERT ON people FOR EACH ROW IF NEW. age < 0 THEN SET NEW.age =0; END IF;// DELIMITER ;

ALTER TABLE people ADD COLUMN valid_age=ABS(check_age) GENERATED ALWAYS;

DELIMITER //
CREATE TRIGGER age check AFTER INSERT ON people FOR EACH ROW IF NEW. age < 0 THEN SET NEW.age =0; END IF;// DELIMITER;

ALTER TABLE people ADD CONSTRAINT check_age CHECK (ABS(age)>=0);

Q45. 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;

Q46. 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

Q47. 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

Q48. 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?

SELECT doc->”$.name” FROM col WHERE doc->”$.season” = “1”;

SELECT “S.name” FROM col WHERE “S.season” = “1”;

SELECT doc->,$.name,, FROM col WHERE doc->”$ . season” = “1”;

SELECT name FROM col WHERE season = 1;

Q49. 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)