MySQL is known for its ease-of-use, performance, and scalability. The versions prior to MySQL 5.5 have MyISAM as their default database storage engine. In MySQL 5.5, the default settings have been changed as InnoDB becomes the default database storage engine. This change has brought a handful of significant improvements in the lives of database users and administrators. Some of the major benefits of using InnoDB tables include ACID transactions, Referential integrity, and Crash recovery.