Microsoft SQL Server, like MySql, is a Relational Database Management System (RDBMS) developed by the well-known company Microsoft. This type of database is often used in business applications to store, manage, and access data because it is easy to scale up and down, works quickly, is safe, and has advanced features like support for distributed programming and transaction processing. Each edition, such as Enterprise, Standard, and Express, has different features to meet different application needs.