[rigged-system]

Are you talking about at the schema design level or more from a stored procedure point of view?

Can you give an example of the business logic you have in mind?

[vanilla-almond]

I was thinking in terms of what level of detail is preferred in a database. Is it merely the database schema? Is it adding constraints and data validation logic to that schema (or placing that outside in your programming language code)? Or is it also adding (stored) procedures using the database language too? I'm guessing that everyone will have a different opinion based on the projects they've worked on.