How can MySQL update data in real-time?

To update data in MySQL in real-time, you can use the following methods:

1. Create triggers in the database to automatically trigger update operations when specific conditions are met. Triggers can execute corresponding actions when data is inserted, updated, or deleted.
2. By using a scheduled task (Cron Job), you can regularly or periodically execute update operations. You can set up scheduled tasks using task schedulers in the operating system, such as crontab.
3. Creating a stored procedure in MySQL allows you to encapsulate update operations and call the procedure when data needs to be updated.
4. One option is to use an external program or script to regularly or in real-time, fetch data from an external source and update it in a MySQL database.

It is necessary to choose the appropriate method to achieve real-time data updates based on specific business needs and system architecture.