How to manage transactions in MySQL?

In MySQL, transaction management can be carried out using the following methods:

1. Start a transaction: Use the START TRANSACTION statement or the BEGIN statement to initiate a new transaction.
2. Submit transaction: use the COMMIT statement to save all operations of the current transaction to the database.
3. Rollback transaction: Use the ROLLBACK statement to undo all operations in the current transaction and revert all changes made to the database.
4. Set the transaction isolation level with the SET TRANSACTION ISOLATION LEVEL statement to control the interactions between transactions.
5. Savepoint: A savepoint can be created using the SAVEPOINT statement to partially rollback operations within a transaction.
6. Automatic submission: By default, MySQL has automatic submission mode enabled, meaning that every SQL statement will automatically submit a transaction. You can use the statement SET AUTOCOMMIT = 0 to disable automatic submission mode, allowing for manual control over transaction submission and rollback.

Using the above methods, effective transaction management can be achieved in MySQL, ensuring data consistency and integrity.