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https://dev.mysql.com/doc/refman/8.4/en/ldml-collation-example.html
To add a UCA collation for a Unicode character set without recompiling MySQL, use the following procedure. If you are unfamiliar with the LDML rules used to describe the collation's sort characteristics, see Section 12.14.4.2, “LDML Syntax ...
https://dev.mysql.com/doc/refman/8.4/en/locking-functions.html
While held by one session, other sessions cannot obtain a lock of the same name. Returns 1 if the lock was obtained successfully, 0 if the attempt timed out (for example, because another client has previously locked the name), or NULL if an error ...
https://dev.mysql.com/doc/refman/8.4/en/multiple-column-indexes.html
MySQL can create composite indexes (that is, indexes on multiple columns). For certain data types, you can index a prefix of the column (see Section 10.3.5, “Column Indexes”). MySQL can use multiple-column indexes for queries that test all the ...
https://dev.mysql.com/doc/refman/8.4/en/multiple-windows-servers.html
You can run multiple servers on Windows by starting them manually from the command line, each with appropriate operating parameters, or by installing several servers as Windows services and running them that way. General instructions for running ...
https://dev.mysql.com/doc/refman/8.4/en/multiple-windows-services.html
On Windows, a MySQL server can run as a Windows service. The procedures for installing, controlling, and removing a single MySQL service are described in Section 2.3.3.8, “Starting MySQL as a Windows Service”. To set up multiple MySQL services, ...
https://dev.mysql.com/doc/refman/8.4/en/myisam-repair.html
The discussion in this section describes how to use myisamchk on MyISAM tables (extensions .MYI and .MYD). You can also use the CHECK TABLE and REPAIR TABLE statements to check and repair MyISAM tables. See Section 15.7.3.2, “CHECK TABLE ...
https://dev.mysql.com/doc/refman/8.4/en/myisam-storage-engine.html
MyISAM is based on the older (and no longer available) ISAM storage engine but has many useful extensions. Table 18.2 MyISAM Storage Engine Features Feature Support B-tree indexes Yes Backup/point-in-time recovery (Implemented in the server, rather ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-backup-concepts.html
A backup is a snapshot of the database at a given time. The data actually stored in the database tables at the time that the backup was made Transaction log. A sequential record telling how and when data was stored in the database Each of these ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-computer-definition.html
The [computer] section has no real significance other than serving as a way to avoid the need of defining host names for each node in the system. Id Version (or later) NDB 8.4.0 Type or units string Default [...] Range ... Restart Type Initial ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-disk-data-objects.html
NDB Cluster Disk Data storage is implemented using the following objects: Tablespace: Acts as containers for other Disk Data objects. A tablespace contains one or more data files and one or more undo log file groups. Undo log file: Contains undo ...