They’re called indexed views in SQL Server – read these white papers for more background:
- Creating an Indexed View
- Improving Performance with SQL Server 2008 Indexed Views
Basically, all you need to do is:
- create a regular view
- create a clustered index on that view
and you’re done!
The tricky part is: the view has to satisfy quite a number of constraints and limitations – those are outlined in the white paper. If you do this, that’s all there is. The view is being updated automatically, no maintenance needed.
Additional resources:
- Creating and Optimizing Views in SQL Server
- SQL Server Indexed Views