Microsoft SQL Server is a relational database management system (RDMS) developed by Microsoft. As a database server, it is a product with the essential capacity of storing and recovering information/data as asked for by other software applications. These applications may run either on a similar PC or on another PC across the network, for example, the internet.
A relational database management system implies two things. To begin with, data/information kept inside SQL Server will be housed in a 'rational database', and then, the SQL Server is a complete 'management framework', not only a database. SQL itself represents Structured Query Language. This is the language used to oversee and direct the database server.