Nuked DWH/BI 

Wasting all the hard work

Systematic solutions have been applied and finally Data Warehouse is live and in production. Many business logics are implemented.
And then, suddenly new business logic, new marketing product needs to be applied in reporting… And then everything that barely worked, with thousands of problems, needs to be thrown away because new logic needs to be set up among everything else.
This means to nuke everything…