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Q21. Review the definition of the phone_list view. 


e . id as id 

‘e . first_name AS ‘first_name’ 

‘e . last_name AS ‘last_name’ 

‘coalesce ( ph1.phone_no, ‘--') AS ‘office_no’ 

‘coalesce (ph2 .phone_no, '--‘) AS ‘cell_no’ 

FROM employees e 

LEFT JOIN employee_phone ph1 

ON ph1.emp_id = AND ph1.type = ‘office’ 

LEFT JOIN employee_phone ph2 

ON ph2 .emp_id = AND ph2 .type = ‘mobile’ 

The tables employees and employee_phone are InnoDB tables; all columns are used in this view. 

The contents of the phone_list view are as follows: 

Mysql> select * from phone_list; 

1 row in set (0.00 sec) 

Which method can you use to change the cell_no value to ‘555-8888’ for John Doe? 

A. DELETE FROM phone_list WHERE first_name= ‘John’ and last_name= ‘Doe’; INSERT INTO phone_list (first_name, last_name, office_no, cell_no) VALUES (‘John’ , ‘Doe’ , ‘x1234’ , ‘555-8888); 

B. INSERT INTO employee_phone (emp_id, phone_no, type) VALUES (1, ‘555-8888’,’mobile’); 

C. UPDATE phone_list SET cell_name ‘555-8888’ WHERE first_name= ‘John’ and last_name= ‘Doe’; 

D. UPDATE employee_phone SET phone_no= ‘555-8888’ where emp_id=1; 


Q22. A MySQL replication slave is set up as follows: 

User all InnoDB tables Receives ROW-based binary logs Has the read-only option 

The replication slave has been found in an error state. 

You check the MySQL error log file and find the following entries: 

2013-08-27 13:55:44 9056 [ERROR] Slave SQL: Could not execute Write_rows event on table; Duplicate entry ‘3’ for key’PRIMARY’ , Error_code: 1062; handler error HA_ERR_FOUND_DUPP_KEY; the event’s master log 56_master-bin.000003, end_log_pas 653, 

Error_code: 1062 

2013-08-27 13:55:44 9056 [Warning] Salve: Duplicate entry ‘3’ for key ‘PRIMARY’ 

Error_code: 1062 2013-08-27 13:55:44 9056 [ERROR] Error running query, slave SQL thread aborted. Fix the problem, and restart the slave SQL thread with “SLAVE START”, We stopped at log ‘56_master-bin.000003’ position 496 

What are two possible causes for this error to occur? 

A. The slave was created with mysqldump –u root –p – skip-lock-table—all-databases > /data/data.sql 

B. The slave user does have INSERT, UPDATE, or DELETE permission and cannot execute the write_rows function. 

C. For tables with UNIQUE keys, statement-based replication must be used maintain integrity. 

D. The root user on the slave has executed FLUSH LOGS, causing the relay-log to doublewrite. 

E. The applications have the SUPER privilege, which allows them to update rows. 

Answer: A,E 

Q23. Which three tasks can be performed by using the performance Schema? 

A. Finding queries that are not using indexes 

B. Finding rows that are locked by InnoDB 

C. Finding client connection attributes 

D. Finding the part of a code in which a single query is spending time 

E. Finding the size of each table 

Answer: A,B,C 

Q24. When backing up a replication slave, which three should also be backed up in addition to data? 

A. The and files 

B. The relay log files 

C. The relay index file 

D. Mysql.slave_master_info table 

E. Mysql.slave_relay_log_info table 

F. Mysql.slave_worker_info table 

Answer: A,B,E 


Q25. Consider the MySQL Enterprise Audit plugin. 

On attempting to start the MySQL service after a crash, notice the following error: 

[ERROR] Plugin ‘audit_log’ init function returned error. 

In the audit log file, you notice the final entry: 












What action should you take to fix the error and allow the service to start? 

A. Re-install the audit plugin. 

B. Execute the command FLUSH LOGS. 

C. Execute the command SET GLOBAL audit_log_fiush= ON. 

D. Move or rename the existing audit.log file. 


Q26. User A issues the command: 


Which command can User B execute against the pets table? 

A. UPDATE pets… 





Q27. You attempt to connect to a Mysql Server by using the mysql program. However, you receive the following notice: 

ERROR 2059 (HY000): Authentication plugin ‘mysql_clear_password’ connot be loaded: plugin not enabled 

What would you run to fix the issue? 

A. The mysql client with the – ignore-password-hashing option 

B. The mysql_secure_installation script to update server security settings 

C. The mysql client with the – enable-cleartext-plugin option 

D. The mysql_upgrade script 

E. The install plugin command for the mysql_cleartext_password plugin 



Q28. ROW-based replication has stopped working. You investigate the error log file and find the following entries: 

2013-08-27 14:15:47 9056 [ERROR] Slave SQL: Could not execute Delete_rows event on table test.t1; Can’t find record in ‘t1’, Error_code: 1032; handler error 

HA_ERR_KEY_NOT_FOUND; the event’s master log 56_master-bin. 000003, end_log_pos 851, Error_code: 1032 

2013-08-27 14:15:47 9056 [warning] Slave: Can’t find record in ‘t1’ Error_code: 1032 

2013-08-27 14:15:47 9056 [ERROR] Error running query, slave SQL thread aborted. Fix the problem, and restart the slave SQL thread with “SLAVE START”. We stopped at log ‘56_master-bin. 000003’ position 684 

Why did you receive this error? 

A. The slave SQL thread does not have DELETE privileges to execute on test.t1 table.s 

B. The table definition on the slave -litters from the master. 

C. Multi-threaded replication slaves can have temporary errors occurring for cross database updates. 

D. The slave SQL thread attempted to remove a row from the test.t1 table, but the row did not exist. 


Q29. You need to replicate a table from a master to a slave. The master and slave copies of the 

table will have different number of columns. 

Which two conditions must be true? 

A. Each extra column in the copy with more columns must not have a default value. 

B. Columns that are common to both versions of the table must be defined in the same order on the master and the slave. 

C. The slave database cannot have more columns than the master. Only the master database can have more columns. 

D. Columns that are common to both versions of the table must come first in the table definition, before any additional columns are additional columns are defined on either server. 

E. The master database cannot have more columns than the slave. Only the slave deatbase can have more columns. 

Answer: A,E 

Q30. You have table ‘apps’,’userdata’ on server that uses MyISAM storage engine. You want to transfer this data to server but use InnoDB engine instead. 

You execute the following commands: 

ServerB commands: 

Shell> mysqldump –u root –h server –no-data apps userdata | mysql –u root –p apps 

Shell> mysql –u root –p –h server –e ‘ALTER TABLE ‘apps’,’userdata’ ENGINE=InnoDB;’ 

Shell> mysqldump –u root –p –h server –no-create-info –order-by-primary apps userdata | mysql –u root –p apps 

What effect does the – order-by-primary argument have on the mysqldump command? 

A. It exports tables with the most indexes first to assist with import speeds. 

B. It ensures that unique indexes have no conflicts when the data is dumped. 

C. It orders by primary key to assist in speeding up importing to InnoDB tables. 

D. It must be specified so index data is dumped correctly when –on-create-info is used.