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Oracle 1z0-909 Exam With Confidence Using Practice Dumps

Exam Code:
1z0-909
Exam Name:
MySQL 8.0 Database Developer
Certification:
MySQL Developer
Vendor:
Oracle
Questions:
65
Last Updated:
Apr 3, 2025
Exam Status:
Stable
Oracle 1z0-909

1z0-909: MySQL Developer Exam 2025 Study Guide Pdf and Test Engine

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MySQL 8.0 Database Developer Questions and Answers

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Question 1

Examine these statements and output:

Now, examine this command:

Mysql> ROLLBACK;

What is true about the effect of the command?

Options:

A.

It undoes the update command.

B.

It returns an error because there is no active transaction.

C.

It undoes the insert command.

D.

It undoes both insert and update commands.

E.

It has no effect.

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Question 2

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:

A.

The row will be updated immediately.

B.

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

C.

A deadlock will occur.

D.

The transaction in Session 1 will be rolled back automatically.

Question 3

Examine this statement and output:

CREATE TABLE geom (g GEOMETRY NOT NOLL, SPATIAL INDEX(g) ) ; Query OK, 0 rows affected, 1 warning (0.01 sec)

An attempt is made to add an SRID attribute to the column using the statement:

ALTER TABLE geom MODIFY COLUMN g geometry NOT NULL SRID 0;

Which is true?

Options:

A.

An error is generated because srid o is an invalid identifier value.

B.

Execution succeeds with a warning.

C.

An error is generated because the index prevents changes to the column.

D.

Execution succeeds and allows the use of the index by the optimizer.

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