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https://dev.mysql.com/doc/refman/8.4/en/replication-solutions-backups-mysqldump.html
Using mysqldump to create a copy of a database enables you to capture all of the data in the database in a format that enables the information to be imported into another instance of MySQL Server (see Section 6.5.4, “mysqldump — A Database ...
https://dev.mysql.com/doc/refman/8.4/en/replication-solutions-scaleout.html
Most websites fit into this category, where users are browsing the website, reading articles, posts, or viewing products. Start by creating a wrapper library or module that implements the following functions: safe_writer_connect() ... You can use ...
https://dev.mysql.com/doc/refman/8.4/en/reserved-accounts.html
During data directory initialization, MySQL creates user accounts that should be considered reserved: 'root'@'localhost: Used for administrative purposes. One part of the MySQL installation process is data directory initialization (see Section ...
https://dev.mysql.com/doc/refman/8.4/en/security-options.html
The following table shows mysqld options and system variables that affect security. For descriptions of each of these, see Section 7.1.7, “Server Command Options”, and Section 7.1.8, “Server System Variables”.
https://dev.mysql.com/doc/refman/8.4/en/select-optimization.html
Besides SELECT statements, the tuning techniques for queries also apply to constructs such as CREATE TABLE...AS SELECT, INSERT INTO...SELECT, and WHERE clauses in DELETE statements. Scalability means that your application can handle more ...
https://dev.mysql.com/doc/refman/8.4/en/show-replica-status.html
The relay log file name (Relay_Log_File) is set according to the relay_log_recovery setting, either a new file that was created at server start or the first relay log file present. Source_User The user name of the account used to connect to the ...
https://dev.mysql.com/doc/refman/8.4/en/spatial-function-argument-handling.html
To ensure SRID 0 behavior, create geometry values using SRID 0. This provides additional flexibility to users because it is unnecessary to be concerned about the uniqueness of geometry data. Spatial values, or geometries, have the properties ...
https://dev.mysql.com/doc/refman/8.4/en/sys-schema.html
The MySQL upgrade procedure produces an error if a sys schema exists but has no version view, on the assumption that absence of this view indicates a user-created sys schema. MySQL 8.4 includes the sys schema, a set of objects that helps DBAs and ...
https://dev.mysql.com/doc/refman/8.4/en/timestamp-lookups.html
Temporal values are stored in TIMESTAMP columns as UTC values, and values inserted into and retrieved from TIMESTAMP columns are converted between the session time zone and UTC. (This is the same type of conversion performed by the CONVERT_TZ() ...
https://dev.mysql.com/doc/refman/8.4/en/triggers.html
The following sections describe the syntax for creating and dropping triggers, show some examples of how to use them, and indicate how to obtain trigger metadata. Additional Resources You may find the MySQL User Forums helpful when working with ...