It is a suite of database software created by Microsoft. It includes a relational database engine which stores data in a Column and Row structure. It also include other services like SQL Server Integration Services(SSIS) which is for data movement and transforming data. It also has SQL Server Reporting Services(SSRS) which is used for creating reports. It also consist of SQL Server Analysis Services(SSAS) which is a multidimensional database used to query data from main database engine.