The Database Engine is the core application service in the SQL Server package for storing, processing, and securing data with SQL Server 2012. The SQL Server 2012 Database Engine is a Windows service that can be used to store and process data in a relational format, as XML documents, as spatial data, and new for 2012, as columnstore indexes. The following are the main responsibilities of the Database Engine:
Provide reliable storage for data
Provide a means to rapidly retrieve this data
Provide consistent access ...