How to migrate a MySQL database?

The migration of MySQL databases can be completed by following these steps:

1. Backup the original database by using the mysqldump command to export the data and structure of the original database. For example:

mysqldump -u username -p old_database > old_database_backup.sql

1. Create new database: Establish a new database on the target server, for example:

mysql -u username -p -e "CREATE DATABASE new_database"

1. Import data to a new database: Use the mysql command to import the backed-up data into the new database, for example:

mysql -u username -p new_database < old_database_backup.sql

1. Update application configuration: Update database connection information in the configuration file of the application, including the new hostname, username, password, and database name.
2. Test the database connection: restart the application and check if the database connection is functioning properly.
3. Migration complete: if everything goes smoothly, the data from the original database will be successfully transferred to the new database.

Please ensure that the target server has MySQL installed during the migration process, with the same or higher version compared to the original server. Also, make sure that the MySQL configuration on the target server is consistent with the original server to maintain data consistency and integrity.