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SQL Server 2012 builds on the huge success of previous versions of Microsoft's relational database management system with a whole host of new features.
These enhancements include AlwaysOn SQL Server Failover Cluster Instances and Availability Groups, both of which provide options to improve database availability. The first of these borrows the concept of Database Availability Groups from Exchange Server 2010, although it is implemented with somewhat different architecture. The second, Availability Groups, are particularly useful for transferring database accesses from a primary site to a remote site, if a primary site suffers a catastrophic disaster as this allows you to assign multiple databases to an Availability Group and, when a server dies, all the databases fail over as a block.
Also offered in SQL Server 2012 are Contained Databases, which seek to simplify the moving of databases between instances - storing the collation setting and the database login user IDs within the database means that you no longer have to synchronize this data between the old server and the new one. In addition there are a number of programmability enhancements including new spatial features, metadata discovery, sequence objects and the THROW statement which raises an exception and transfers execution to a CATCH block of a TRY...CATCH construct.
Other performance enhancements present include ColumnStore Indexes along with improvements to OnLine and partition level operations. There are also security enhancements including provisioning during setup, new permissions, improved role management, and default schema assignment for groups.
If you have any questions about purchasing used and pre-owned SQL Server 2012 licences, please call us today.