Oracle 1z0-909 Based on Real Exam Environment

MySQL 8.0 Database Developer Questions and Answers

Question 5

Examine these statements and output:

Now, examine this command:

Mysql> ROLLBACK;

What is true about the effect of the command?

Options:

It undoes the update command.

It returns an error because there is no active transaction.

It undoes the insert command.

It undoes both insert and update commands.

It has no effect.

Question 6

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?

Options:

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.

Question 7

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

Which two statements would generate this bar graph?

Options:

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;

Question 8

Examine these statements which execute successfully:

The statements executed without exception. Which two are true?

Options:

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.

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Oracle 1z0-909 Based on Real Exam Environment

MySQL 8.0 Database Developer Questions and Answers

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