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An index is a database structure that you can use to improve the performance of database activity. A database table can have one or more indexes associated with it. An index is defined by a field expression that you specify when you create the index. Typically, the field expression is a single field name, like EMP_ID.
Note that MySQL supports two different kinds of tables: transaction-safe tables (InnoDB and BDB) and non-transaction-safe tables (HEAP, ISAM, MERGE, and MyISAM). Advantages of transaction-safe tables (TST): Safer.
Relational Database Management System (RDBMS) MySQL is a relational database management system. ... Easy to use. MySQL is easy to use. ... It is secure. ... Client/ Server Architecture. ... Free to download. ... It is scalable. ... Speed. ... High Flexibility.