MySQL Tutorial for Beginners MySQL tutorial MySQL was developed by MySQL AB, a Swedish company formed in 1995. In 2008, MySQL AB announced that Sun Microsystems had agreed to purchase it for around $1 billion. MySQL is RDMS(Relational Database Management System). It's a free open source SQL database management system and storing information for your website and directly use PHP to access that material and it's very easy for beginners to learn MySQL for MySql Tutorial for Beginners. It is fast, reliable and user-friendly. MySQL is a cross-platform that operates on a computer. There are different Types Of Keys that are used in Database Candidate Key - The candidate keys in a table are specified as the minimum set of keys, and can identify any data row in the table uniquely. Primary Key - It is chosen from one of the candidate keys and becomes a table's identifying key. Super Key - It is the main key Superset. It includes a set of attributes including the pri...