I like this distinction from wikipedia [1] "Anything that is a process or procedure is business logic, and anything that is neither a process nor a procedure is

I like this distinction from wikipedia [1] "Anything that is a process or procedure is business logic, and anything that is neither a process nor a procedure is a business rule." Meaning constraints and the model represent business rules. 1. https://en.wikipedia.org/wiki/Business_logic https://en.wikipedia.org/wiki/Business_logic