In a test database, you issue the SELECT … INTO OUTFILE statement to create a file with your t1 table data. You then TRUNCATE this table to empty it.（）
Mysql＞ SELECT * INTO OUTFILE '/tmp/t1.sql' from t1;
mysql＞ TRUNCATE t1;
A.$ mysqladmin – u root – p – h localhost test – restore /tmp/t1.sql
B.Mysql＞ INSERT INTO t1 VALUES FROM '/tmp/t1.sql'
C.$ mysql – u root – p – h localhost test ＜ /tmp/t1.sql
D.Mysql＞ LOAD DATA INFILE '/tmp/t1.sql' INTO TABLE t1
E.$ mysqlinport – u root – p – h localhost test /tmp/t1.sql
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A.Can back up a remote database server
B.Allow a consistent backup to be taken
C.Are always faster to restore than binary backups
D.Are able to back up specific items within a database
E.Create automatically compressed backups
F.Will lock all storage engines for duration of backup
You want to create a temporary table named OLD_INVENTORY in the OLD_INVENTORY database on the master server. This table is not to be replicated to the slave server.
Which two changes would ensure that the temporary table does not propagate to the slave?（）
A.Use the – replicate-do-db, — replicate-do-table, or – replicate-wild-do-table option with the value equal to OLD_INVENTORY
B.Change the binlog_format option to ROW and restart mysqld before you create the OLD_INVENTORY table
C.Stop SQL_THREAD on the slave until you have finished using the OLD_INVENTORY temporary table
D.Set binlog_format=MIXED with the – replicate-ignore-temp-table option
E.Use the – replicate-ignore-table option with the value equal to OLD_INENTORY.OLD_INVENTORY and restart mysqld before creating the temporary table
A.Mysqld uses internal configuration versioning and reverts to the previous configuration
B.When using mysql_config_editor for configuration adjustments, it detects incorrect syntax and typing mistakes
C.The mysqld_safe script skips the unknown variable and starts using the remaining configuration changes
D.Mysqld prints to the error log about an unknown variable, and then exits
A.MySQL Replication
B.Distributed Replication Block Device
C.Windows Server Failover Clustering
D.MySQL Cluster
A.Mysqlaccess
B.Mysqldump
C.Mysqlshow
D.Mysqlslow
E.Mysqldumpslow
Review the definition of the phone_list view.
CHEATE OR REPLACE ALGORITHM=MERGE DEFINER= 'root'@localhost' SQL SECURITY DEFINER VIEW 'phone_list' AS SELECT
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 = e.id AND ph1.type = 'office' LEFT JOIN employee_phone ph2 ON ph2 .emp_id = e.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.INSERT INTO employee_phone (emp_id, phone_no, type) VALUES (1, '555-8888','mobile')
B.UPDATE phone_list SET cell_name '555-8888' WHERE first_name= 'John' and last_name= 'Doe'
C.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)
D.UPDATE employee_phone SET phone_no= '555-8888' where emp_id=1
You have enabled the Slow Query Log for a short period. When you process the Slow Query Log, you receive the following snip of output:
Count: 100 Time=0 .22a (22s) Lock=0.00s (0s) Rows=0.0 (0),
root[root] @localhost CREATE TABLE 't1' (id serial,id0 varchar(N) unique key,intcaoll INT (N) ,intco12 INT(N) ,intco13 INT(N) ,intco14 INT(N) ,intco15 INT(N) ,charcol1 VARVHAR(N) ,charcol2 VARCHAR(N) charcol3 VARCHAR (N) ,charcol4 VARVHAR(N) ,charcol5 VARCHAR(N) charcol6 VARCHAR (N) ,charcol7 VARVHAR(N) ,charcol8 VARCHAR(N) charcol9 VARCHAR (N) .charcol 10 VACHAR (N) )
Count: 64000 Time-0.02s (1213s) Lock=0.00s (6s) Rows=1.0 (64000),
root [root]@ localhost SELECT intocl1, intco12, intco13, intco14, intco15, intco16,intco17, intco18 ,intcol9, intcol10, charcol1, charcol2, charcol3, charcol4, charcol5, charcol6 ,charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's' Count: 1 Time=0.02s (0s) Lock=0.00s (0s) Rows=1.0 (1)
agent [agent] @localhost SELECT Select_priv, Repl_client_priv, Show_db_priv, Super_priv, Process_priv FROM mysql.user WHERE CONCAT (user, 's', host) = CURRENT_USER () Count: 48000 Time=0.02s (778s) Lock=0.00 (3s) Rows=1.0 (48000),
root[root]@localhost SELECT intocl1,intcol2,intcol3, intcol4, intcol5, charcol1, charcol2, charcol3 ,charcol4, charcol5, charcol6, charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's'
You want to tune the query such that it provides the greatest overall time savings. Which query will accomplish this?（）
A.CHEATE TABLE 't1' (id serial, id0 varchar (N) unique key, intcol1 INT (N) ,intcol2 INT (N), intcol3 INT(N) ,intcol4 INT(N), intcol5 INT(N), charool1 VARCHAR (N) ,charcol2 VARCHAR (N), charcol3 VARCHAR(N), charcol4 VARCHAR(N), charcol5 VARCHAR (N) ,charcol6 VARCHAR (N), charcol7 VARCHAR(N), charcol8 VARCHAR(N), charcol9 VARCHAR (N) ,charcol10 VARCHAR (N)
B.SELECT intcol1, intcol2, intcol3, intcol4, intcol5, intcol6, intcol7, intcol8, intcol9, Intcol10, intcol11, intcol12, intcol13, intcol14, intcol15, intcol16, intcol17, intcol18, intcol19, charcol10 FROM t1 WHERE id = 's'
C.SELECT Select_priv, Repl_client_priv, Show_db_priv, Super_priv, Process_priv FROM mysql.user WHERE CONCAT (user,'s', host) = CURRENT_USER()
D.SELECT intcol1, intcol2, intcol3, intcol4, intcol5, charcol1, charcol2, charcol3, charcol4, charcol5, charcol6, charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's'
A.It implements High Availability by using the .NET Connector's' load balancing capabilities
B.It is shared-nothing architecture
C.It is provided by means of IP- level disk replication
D.It relies on the shared disk architecture being visible to both servers
A.When uptime is critical
B.When data must be refactored
C.When application concurrency is static
D.When data loss is unacceptable
E.When application is a single point of failure
You have forgotten the root user account password. You decide to reset the password and execute the following:
Shell＞ /etc/init.d/mysql stop
Shell＞ /etc/init.d/mysql start – skip-grant tables
Which additional argument makes this operation safer?（）
A.–skip-networking, to prohibit access from remote locations
B.–reset-grant-tables, to start the server with only the mysql database accessible
C.–read-only,to set all data to read-only except for super users
D.–old-passwords, to start Mysql to use the old password format while running without the grant tables
最新试题
You are attempting to secure a MySQL server by using SSL encryption.On starting MySQL, you get this error:130123 10:38:02 [ERROR] mysqld: unknown option '—ssl'What is the cause of the error?（）
What is true regarding InnoDB locking?（）
You have taken a Logical Volume Manager (LVM) snapshot backup of a volume that contains the MySQL data directory. Why is it important to remove snapshots after completing a RAW backup in this way?（）
Which three tasks can be performed by using the performance Schema?（）
Consider the following:Which statement best describes the meaning of the value for the key_len column?（）
Which three are properties of the MyISAM storage engine?（）
Compare a typical Distributed Replicated Block Device (DRBD) with MySQL Standard Replication using master-slave replication. Which two statements are correct?（）
Which three data components are needed for point-in-time recovery?（）
Which two statements are true about setting the per-thread buffers higher than required?（）
You want to create a temporary table named OLD_INVENTORY in the OLD_INVENTORY database on the master server. This table is not to be replicated to the slave server.Which two changes would ensure that the temporary table does not propagate to the slave?（）