What does my in mysql mean?

The "my" prefix in MySQL indicates content related to the MySQL server or its components, mainly used for system databases, stored procedures, library functions, variables and options. System databases include mysql, performance_schema, and information_schema; stored procedures include myisamchk, mysqlbinlog, and mytop; library functions include my_acos(), my_concat(), and my_isnumeric(); variables and options include my.cnf, MYISAM, and MyISAM. Additionally, the "my" prefix is ​​used in some older

MySQL. The "my" prefix in is used to indicate content associated with the MySQL server itself or its components. It is mainly used for the following purposes:

1. System database

mysql

: A system that stores MySQL server metadata and privilege information database.
• performance_schema
: Collects and stores information about MySQL server performance metrics.
• information_schema
: Provides read-only access to the MySQL data dictionary and server state information.
2. MySQL Stored Procedure

myisamchk

: Utility for checking and repairing MyISAM tables.
• mysqlbinlog
: Utility for reading and parsing binary log files.
• mytop
: A utility similar to "top", but optimized specifically for MySQL servers.
3. MySQL library function

my_acos()

: Calculate arc cosine.
• my_concat()
: Connection string.
• my_isnumeric()
: Check whether the string is a number.
4. MySQL specific variables and options

my.cnf

: MySQL server configuration file.
• MYISAM
: A MySQL storage engine.
• MyISAM
: Alias ​​of the MyISAM table.
• In addition, the "my" prefix is ​​also used for some older MySQL features, such as:

myisam_pack_keys

: Adjust the way MyISAM tables are indexed Deprecated option to improve performance.
• myisam_repair_threads
: Deprecated option for parallel repair of MyISAM tables.
• It is worth noting that for the latest versions of MySQL, it is recommended to use more modern system databases and tools such as "performance_schema" and "information_schema".

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