Which directory the Mysql database file is stored in

In other words, I built a database called AC in MySQL, but I can't find its storage location, how is the database stored in MySQL, and is there a log file and data file like SQL Server?

MySQL database on the system is in the form of a folder, you create an AC database, then the disk will appear on the AC directory, and the global configuration of the AC database is the db.opt file in the AC folder to manage,

MySQL data file under DataDir, you execute show variables like '%datadir% ' in the database, the path of the database file is displayed, you can find the AC folder

Which directory the Mysql database file is stored in