In SQL Server there are four databases that you may never use but are equally as important as your databases you work on day in day out.
These "System" databases are a fundamental concept to understand and will take a long time to master. In the case of this video I will give you a run down of what each one does (albiet quickly) so you have a general understanding of what they do and why they need to be backed up.
Although it can be considered a boring part of SQL it is stil vital. So have your coffee ready and follow me!