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https://dev.mysql.com/doc/refman/8.0/en/faqs-information-schema.html
Where can I find documentation for the MySQL INFORMATION_SCHEMA database? A.7.2. What is the difference between the Oracle Data Dictionary and MySQL INFORMATION_SCHEMA? A.7.5. Can I add to or otherwise modify the tables found in the ...Where can I ...However, Oracle and MySQL use different table names and column ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-background.html
Specifically, replicated databases have to deal with the fact that they require maintenance and administration of several servers instead of just one. Therefore, the ultimate challenge is to fuse the logic of the database and data replication with ...The most common way to create a fault-tolerant system is to resort to making components redundant, in other words the component can be removed and the system should continue to operate as ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-message-compression.html
If you use binary log transaction compression in combination with Group Replication's message compression, message compression has less opportunity to act on the data, but can still compress headers and those events and transaction payloads that are ...Whether a specific message is compressed depends on the threshold that you configure using the group_replication_compression_threshold system ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-management.html
The second method involves studying the contents of the cluster log ndb_node_id_cluster.log; this is usually found in the management server's DataDir directory, but this location can be overridden using the LogDestination option. More detailed ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-columns-list.html
This is a variant of LIST partitioning that enables the use of multiple columns as partition keys, and for columns of data types other than integer types to be used as partitioning columns; you can use string types, DATE, and DATETIME columns. In ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-columns.html
The permitted data types are shown in the following list: All integer types: TINYINT, SMALLINT, MEDIUMINT, INT (INTEGER), and BIGINT. (This is the same as with partitioning by RANGE and LIST.) Other numeric data types (such as DECIMAL or FLOAT) are ... The next two sections discuss COLUMNS partitioning, which are variants on RANGE and LIST ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-lock-tables.html
The Performance Schema exposes lock information through these tables: data_locks: Data locks held and requested data_lock_waits: Relationships between data lock owners and data lock requestors blocked by those owners metadata_locks: Metadata locks ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-memory-model.html
As the Performance Schema collects data, memory is allocated in the corresponding buffer. As the Performance Schema collects data, memory is allocated in the corresponding buffer, until the buffer size reaches N. Data collected by the Performance ...
https://dev.mysql.com/doc/refman/8.0/en/pluggable-storage-common-layer.html
A MySQL pluggable storage engine is the component in the MySQL database server that is responsible for performing the actual data I/O operations for a database as well as enabling and enforcing certain feature sets that target a specific ...From a ...This area also includes support for capabilities such as multi-version concurrency control or “snapshot” ...
https://dev.mysql.com/doc/refman/8.0/en/reserved-accounts.html
One part of the MySQL installation process is data directory initialization (see Section 2.9.1, “Initializing the Data Directory”). During data directory initialization, MySQL creates user accounts that should be considered reserved: ...This ...