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1z0-909 Exam Dumps - Oracle MySQL Developer Questions and Answers

Question # 4

Examine these statements which execute successfully:

The statements executed without exception. Which two are true?

Options:

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 # 5

Examine this statement which executes successfully:

SET @ir := 2;

Which query updates the value of @r to 0?

Options:

A.

SELECT 'Car' REGEXP('Ca?') >= 0 INTO @r;

B.

SELECT STRCMP(‘Car'/Ca?') >= 0 INTO @r;

C.

SELECT 'Car' LIKE 'Ca?' INTO @r;

D.

SELECT 'Car' RLIKE 'Ca?' INTO @r;

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Question # 6

What is an advantage of using mysqli in PHP programs rather than using PHP Data Objects (PDO)?

Options:

A.

mysqli supports object oriented programming.

B.

mysqli can access databases from other vendors.

C.

mysqli supports non blocking, asynchronous queries.

D.

mysqli includes X DevAPI functions.

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Question # 7

Examine these MySQL Shell statements:

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

Options:

A.

All documents are added without any error or warning.

B.

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

C.

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

D.

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

E.

All documents are added and cause a warning.

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Question # 8

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?

Options:

A.

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

B.

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

C.

Session 1 does not block Session 2.

D.

Statements in Session 2 are committed.

E.

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

F.

Session 2 does not start a transaction.

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Question # 9

Which two are true about MySQL connectors?

Options:

A.

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

B.

Connector/J is based on Connector/C.

C.

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

D.

Connector/NET runs on the Windows platform only.

E.

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

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Question # 10

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

Options:

A.

SET @a = ''; EXECUTE prep USING @a;

B.

DEALLOCATE PREPARE prep?

C.

DROP PROCEDURE prep;

D.

SET @prep = NULL;

E.

DROP PREPARE prep;

F.

PREPARE prep FROM '';

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Question # 11

Examine this statement:

DECLARE not_found CONDITION FOR SQLSTATE '02000';

In which two statements can not found be used?

Options:

A.

in a leave statement to exit a loop

B.

in an if statement

C.

in a while loop

D.

in a handler declaration

E.

in a signal statement

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Question # 12

Examine these lines of Python code:

You must add a line of code to complete the code to return data to the variable d. Which line will do this?

Options:

A.

d = cursor.execute(query)

B.

d = cursor.execute(query, (hire_start, hire_end) )

C.

d = cursor.fetch(query % (hire_start, hire_end))

D.

d = cursor.fetch(query, (hire_start, hire_end))

E.

d = cursor . f etchall (query)

F.

d = cursor.fetchall(query, (hire_start, hire_end))

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Exam Code: 1z0-909
Exam Name: MySQL 8.0 Database Developer
Last Update: Feb 22, 2025
Questions: 65
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