The 4+1 views are Logical view, Development View, Physical view, and Process view plus the Use Case view at the center.
Where are they fitted in the RUP's 4 phases: Inception, Elaboration, Constraction, and Transition?
"Knowing is not enough, you must apply... Willing is not enough, you must do."
I knew I would regret that burrito. But this tiny ad has never caused regrets: