Code and Business Logic are terms not precise enough to describe. Predicate push down belongs to the DB. A small library of well known object/graph query primi

Code and Business Logic are terms not precise enough to describe. Predicate push down belongs to the DB. A small library of well known object/graph query primitives can be colocated with the DB. These primitives tend to be side effect free and easy to comprehend. They also form 80% of "business logic".