Ultimate ASP.NET 5 Web API Development Guide - Refactor PUT Method

The video tutorial covers the process of refactoring code to adhere to DRY principles by creating base details using abstract classes. It explains how to implement validation rules and inheritance to ensure consistency across create and update operations. The tutorial demonstrates how to use Entity Framework for tracking and modifying data, and concludes with testing and finalizing update operations using DTOs and Swagger.

How does the separation of concerns principle apply to the structure of the code discussed?

What happens if an update operation tries to modify a non-existent record?

What is the purpose of the mapper in the update operation?

Why is it important to retain the ID during an update operation?