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1z0-909 Exam Dumps - MySQL 8.0 Database Developer

Question # 4

Examine these commands and output:

Which is true about the execution of the insert statement?

A.

It returns an error.

B.

It inserts a row in the view and base table.

C.

It inserts a new row in the base table only.

D.

It inserts a new row in the view only.

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Question # 5

Examine this table definition:

The table must always remain a valid document store collection. What restriction does this impose on any added column?

A.

The column must be a generated column referencing any attribute of doc.

B.

The column must have a default value.

C.

The column must be used in a unique constraint.

D.

The column must be a generated column referencing only an existing attribute of doc.

E.

The column must be indexed.

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Question # 6

Examine this statement and output:

Now, examine these desired output values:

Which statement updates the table data as require

A.

UPDATE exam_result SET score=TRUNCATE

B.

UPDATE examresult SET score=ROUND(CEIL(score

C.

UPDATE exam_result SET score=CEIL(TRUNCATE(sco

D.

UPDATE exam_result SET score=CEIL(ROUND(score,1));

E.

UPDATE exam_result SET score=ROUND(score,1);

F.

UPDATE exam_result SET score=TRUNCATE(score,1);

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Question # 7

Examine this event's metadata:

Now examine this command:

DROP USER 'userl'e'localhost';

Which effect will the command have on the event?

A.

The event is scheduled and executed but fails. The system will log an error.

B.

The event is scheduled but will no longer execute. The system will log an error.

C.

The event will be dropped without an error or warning.

D.

The event is not scheduled and will no longer execute. The system will log an error.

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Question # 8

Examine these statements which execute successfully:

The statements executed without exception. Which two are true?

A.

No transaction commits.

B.

One row is inserted into band.

C.

Two transactions commit.

D.

No row is inserted into band.

E.

The transaction is rolled back to the savepoint.

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Question # 9

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

Which two statements would generate this bar graph?

A.

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

B.

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

C.

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

D.

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

E.

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

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