Context is not clear. See whether following helps
If you just want to store only the language name then can't you just use the varchar datatype and store the culture name (In .net u can use System.Threading.Thread.CurrentThread.CurrentUICulture.Name)
"en-US"
"en-GB"
This can then be used to set back to the current culture using following line
System.Threading.Thread.CurrentThread.CurrentUICulture = New Globalization.CultureInfo("en-GB")