Code First is a new development approach in the Entity Framework 4.1 stack that can simplify the understanding and maintenance of your domain model.

Code First Migrations allow for database changes to be implemented all through code. Through the use of Package Manager Console (PMC), commands can be used to scaffold database changes.

There are three approaches to model your entities in Entity Framework: Code First, Model First, and Database First. This article discusses all these three approaches and their pros and cons.