also, views can be defined as ORM objects/POJOs. They can be read-only, some views are "trivially-remappable" (if there is a 1:1 mapping from view columns to table columns) or even you can use INSTEAD OF INSERT/UPDATE triggers to take writes on that view and do something completely else with it. ;)

I've used that to do dumb shit like lever a table schema into an ORM mapping that it wasn't really designed for, that I had to maintain fallback compatibility conditions onto the tables.

views are really a db-level "interface" implementation that few people really exploit fully. Here is the definition, here is the implementation. And yes global temporary tables are such a cute cheat for unlimited-size query-specific data ;)

That is why ORMs have fallzout of fashion.