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MySQL Developer MySQL 8.0 Database Developer

MySQL 8.0 Database Developer

Last Update May 8, 2024
Total Questions : 65

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Questions 4

A server hosts MySQL Server and Apache Webserver supporting a PHP/PDO based application.

The application must be migrated from PHP to their Java application server on another host. The MySQL instance remains on the original host.

Examine the PDO connection string used in the existing application:

Mysql:host-localhost;dbname=sales;unix_socket=/var/run/mysql.sock

Which two prevent Java from using the Unix socket?

Options:

A.  

The X Dev API protocol must be enabled to use sockets in Connector/J driver.

B.  

The socket is not implemented in Connector/J driver.

C.  

The socket can only be accessed from the local host.

D.  

socket is a reserved word in Java.

E.  

Java treats the socket file as insecure.

Discussion 0
Questions 5

Examine these commands which execute successfully in the sequence shown in Sessions S1 and S2:

Questions 5

Now, examine this statement that execute successfully in s1:

S1> SELECT * FROM emp;

Which is true about the result of the select statement?

Options:

A.  

The inserted row is returned because the transaction is auto committed in S2.

B.  

The inserted row is not returned because the isolation level is READ COMMITTED in S2.

C.  

The inserted row is not returned because the transaction still active in s2.

D.  

The inserted row is returned because the isolation level is RPEATABLE READ in S1.

Discussion 0
Questions 6

Examine these statements issued from Session 1 which execute successfully:

Questions 6

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.

Discussion 0
Questions 7

Examine this event's metadata:

Questions 7

Now examine this command:

DROP USER 'userl'e'localhost';

Which effect will the command have on the event?

Options:

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.

Discussion 0
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