title: SQL Server file names vs versions
body: <p>I am lucky to be an admin of a server, but I have no idea how many versions of sql server on this server. When I opened the file Microsoft SQL Server, there are files called 80, 90, 100, 110. And I have only found SQL Server 2012 setup, so what's the relationship between the files names like 80, 90, 100, 110 with sql server versions like 2008, 2012?</p>