You decide to downgrade to MySQL 5.7 to work on your code

Which two methods will achieve this?

Examine this set of tables:

 Tables ( country, countryinfo, location) 

Which two option will export data into one or more files? 哪两个选项将数据导出到一个或多个文件中

Which two statements reflect how MySQL Server handles the table definition changes? =

Which two statements are true?

The disk space occupied by the binary log files continues to grow 二进制日志文件占用的磁盘空间继续增长

Which two methods mange this issue? 

You have your admin login credentials to connect to a MySQL server running Microsoft Windows on remote host 192.0.2.1:3306 to connect to the world database 您拥有管理员登录凭据以连接到远程主机 192 上运行Microsoft

Which four options need to be specified to complete this task with a single command? 需要指定哪四个选项才能使用单个命令完成此任务

mysql\>SELECT * FROM data_locks LIMIT 1\G 

ENGONE: INNODB 

ENDINE_LOCJK_I: 1200:146 

ENGINE_TRANSACTION_ID: 1200 

THREAD_ID:45 

ECENT_ID:11 

OBJECT_SCHEMA: mydb 

OBJECT_NAME: mytable1 

PARTITION_NAME: NULL 

SUSPARTITION_NAME: NULL 

INDEX_NAME: NULL 

OBJECT_INSTANCE_BEGIN:118793337250203 

LOCK_TYOE: RECORD

 LOCK_MODE: X 

LOCK_STATUS: GRANTED 

LOCK_DATA: 1922,192 

Which two statements are true? 

 What are two major concerns of running an installation with incorrect file privileges? 使用不正确的文件权限运行安装的两个主要问题是什么

 Examine this log output: 

2019-12-12T22:21:40:353800z 0 [System] [DCY-010116] [Server] /mysql/bin/mysqld [mysld 8.0.18-comnercial starting as process 29740 

2019-12-12T22:21:40:458802z 1 [ERROR] [DCY-012592] [InnoDB]Operating system error number 2 in a file operation 

2019-12-12T22:21:40:459259z 1 [ERROR] [DCY-012593] [InnoDB] The error means the system cannot find the patj specified 

2019-12-12T22:21:40:459423z 1 [ERROR] [DCY-012594] [InnoDB]If you are installing InnoDB,remember that must create directories yourself ,InnoDB does not create them 

2019-12-12T22:21:40:459606z 1 [ERROR] [DCY-012646] [InnoDB] File ./ibdatali ‘open’ returned os error 71.Cannot continue operation 

2019-12-12T22:21:40:459891z 1 [ERROR] [DCY-012981] [InnoDB]Cannot continue operation 

Which two things must you check? 

Examine the output of the group members: 

mysq1\> SELECT MEMBER _ ID, MEMBER_ STATE FROM performance_ Schema. replication_ group_ members; 

+---------------------------------------------------------------------+------- -----------------------+ 

|MEMBER_ ID | MEMBER STATE |

 +---------------------------------------------------------------------+------- -----------------------+ 

|1999b9fb-4aaf-11e6-bb54-28b2bd168d0 | UNREACHABLELINE |

 |199b2df7-4aaf-11e6-bb16-28b2bd168d0 | ONLINE |

 |199bb88e-4aaf- 11e6-babe -28b2bd168d07 | ONLINE | 

|19ab72fc-4aaf-11e6-b51 - 28b2bd1 68d07 | UNREACHABLE | 

|19b33846-4aaf-11e6-ba81- 2 8b2bd168d071 | UNREACHABLE | 

+---------------------------------------------------------------------+------- -----------------------+

 Which two statements are true about network partitioning in the cluster? 关于群集中的网络分区，哪两个语句是正确的

There is a high concurrency of transactions at thousands of transactions per second of volatile data.在每秒数千个事务的易失性数据中存在高并发事务

A restore from binary logs is planned using the command: mysqlbinlog 计划使用命令从二进制日志还原

--start-datetime='2019-08-01 11:00:00’ –

-stop-datetime='2019-08-10 08:30:25' binlog.000238 binlog.000239 binlog. 000240 | mysql 

Which two characteristics cause the restore to be inconsistent to the original data? 哪两个特征导致还原与原始数据不一致

rpl_semi_sync_master_timeout has never been reached. 从未达到rpl_semi_sync_master_timeout

You find that the disk system on the master has failed and as a result, the data on the master is completely unrecoverable. 您发现主服务器上的磁盘系统出现故障，因此，主服务器上的数据完全无法恢复

 Which two statements are true? 

Which three statements are true?