MySQL Federated Engine: Role Explained
The MySQL Federated engine is a storage engine in the MySQL database that allows users to create a connection to tables on another MySQL server from one MySQL server. Its purpose is to enable users to access data from one database server on another, thereby achieving the functionality of a distributed database.
By using MySQL Federated, it is possible to create a local table on one database server that actually retrieves data from a table on a remote server. This allows users to access data from the remote server through querying the local table, making it as simple and convenient as accessing a local table.
The primary advantages of the MySQL Federated engine are:
- Unified access: Using the MySQL Federated engine, users can access data on remote servers using the same SQL statements and tools, without the need to write complex code or use specialized APIs.
- Data sharing: The MySQL Federated engine allows users to share data on different servers, which is very useful for distributed applications and distributed database environments.
- Data Integration: The MySQL Federated engine allows for the integration of data from multiple MySQL servers onto one database server, simplifying data management and queries.
While the MySQL Federated engine offers easy access to remote data, it is important to note that performance may decrease due to the need to transfer data over the network for each query. Additionally, the MySQL Federated engine is only suitable for connecting between two MySQL servers; for other types of database servers, alternative methods and tools may be required to achieve data sharing and integration.
