Structured Query Language (SQL) is a relational database management system which adds speed and flexibility by allowing data to be stored in individual tables rather than a single storage area.
A database is a structured collection of data that can be anything from a shopping list, photo gallery or any vast amount of information. In essence, MySQL is an organization tool to aid your computer in quickly accessing large amounts of stored data, i.e. for a program or website. The program is offered as open source and uses the GPU General Public License.