Views and view models

[james agada]

I want to use view models. The documentation is a bit scanty and the todo
view model and how it is used is difficult for me to comprehend.
1. Can I define views at database level and map it to a view model? If so,
a small example will do.
2. Is there a better documented example of using view models for instance
for reports.
3. Is there a way to integrate something like jasper report to isis?