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Download MySQL 8.0 Database Developer Exam Dumps

NEW QUESTION 48
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?

A. The socket is not implemented in Connector/J driver.B. Java treats the socket file as insecure.C. socket is a reserved word in Java.D. The X Dev API protocol must be enabled to use sockets in Connector/J driver.E. The socket can only be accessed from the local host.

Answer: A,B

 

NEW QUESTION 49
Examine this statement and output:

Which is true?

A. myview was defined with the temptable processing algorithm.B. The underlying table's index on the Name column is not chosen because of low selectivity.C. Column Name in myview can be indexed if the is_updatable attribute is true.D. myview cannot be automatically indexed.

Answer: A

 

NEW QUESTION 50
Examine these statements and output:

Now, examine this command:
Mysql> ROLLBACK;
What is true about the effect of the command?

A. It returns an error because there is no active transaction.B. It has no effect.C. It undoes the update command.D. It undoes the insert command.E. It undoes both insert and update commands.

Answer: D

 

NEW QUESTION 51
You must write a statement that combines the first_name and last_name columns from the employees table as "last_name, first_name." Which two statements will do this?

A. SELECT CONCAT(last name,', ',first_name) FROM employees;B. SELECT last_name, ' , ',first_name FROM employees;C. SELECT CONCAT_WS(', ',last_name,first_name) FROM employees;D. SELECT GROUP_CONCAT(last_name, first_name) FROM employees;E. SELECT last_name + ', ' + first_name FROM employees;

Answer: A,C

 

NEW QUESTION 52
Which two differences exist between the timestamp and date time data types?

A. timestamp stores the interval between two dates.B. timestamp has larger range of values.C. timestamp stores more decimal points in secondsD. timestamp converts the value based on the session time zone.E. timestamp uses less storage space.

Answer: D,E

 

NEW QUESTION 53
......


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