A simple rule to follow when creating problem domain classes and data access and manipulation classes is that there should be ______________.
A) One data access and manipulation class for each concrete problem domain class
B) Two data access and manipulation classes for each concrete problem domain class
C) N data access and manipulation classes for each concrete problem domain class, where N is the number of methods in the problem domain class
D) N data access and manipulation classes for each concrete problem domain class, where N is the number of subclasses of the problem domain class
E) None of the above

Question

Quizplus · Accepted Answer

It is best practice to have one data access and manipulation class for each concrete problem domain class to ensure a clear separation of concerns and maintainability in the codebase. Having two or more access and manipulation classes for a single domain class can lead to confusion and duplication of code, while having an arbitrary number of access and manipulation classes based on the methods or subclasses of the domain class can lead to unnecessary complexity.

A Simple Rule to Follow When Creating Problem Domain Classes