Question: I have a spring boot application that works with MySQL

Question

Question: I have a spring boot application that works with MySQL

db.
I have changed my database server from MySQL to MariaDB in my own server.
Then I have restarted my tomcat without any change kn war files and I saw that my spring boot war files are working with mariadb also!
while my datasource configuration in application.properties is for Mysql not mariadb:

spring.datasource.url=jdbc:mysql://...

spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

How it is possible?