CRUD is &quot;generalizable&quot; only in textbook examples and behind your wet ears. Actual implementations vary widely from the truly simple to things with staggering complexity.<p>Attached to each of the letters in the acronym of C.R.U.D. may be arbitrarily complex rules and constraints that can take many man-years to implement, have mission-critical risks, and require maintenance for decades.<p>ERP&#x27;s are &quot;crud&quot; applications, are they trivial? Perhaps in your view, admittedly they are shit for end-users and seem &quot;unforgivably&quot; stupid. Well, there&#x27;s an opportunity for you to become a billionaire in short-order, implement ERP&#x27;s and make Oracle your bitch. Not up to the challenge? Then perhaps refrain from calling the world stupid.