SQL server is a relational database management system, its primary work is to store and fetch data as per instructions by software development applications, either on the same computer or on remote location, there are many edition of this for different kind of use and for different type of work load, it is implemented nearly in every small and big organization. It works on different types of query as its name denotes “Structured Query Language”.

It can be set to automatically back up, it can do incremental back up , it means it keep on backing up the rather than once in the day, the data can easily be duplicated or copies without the SQL server DBA, it can handle Terabytes worth of data, it enables the million command per second, it is proved that this is the most secure database