Difference Between Code First and Database First in Entity Framework

Keyword focus: Entity Framework

When discussing Entity Framework, it is essential to understand the distinction between Code First and Database First approaches.

Code First Approach

In Code First approach, you define the model classes first without any connection to the database. The database schema is then generated based on these model classes. This approach is beneficial when you want full control over your database model and prefer to design your application from a code perspective.

Database First Approach

On the other hand, Database First approach involves generating model classes based on an existing database schema. Entity Framework generates the code for the classes that represent tables, views, and relationships in your database. This method is suitable when working with an already established database or when you need to quickly create models based on an existing structure.

When to Use Each Approach?

For the Code First approach, it is preferred when you are starting a new project and want to maintain control over the database design through code. This approach is also suitable for applications where the database structure evolves over time.

Database First approach, however, is useful when you need to work with an existing database where the schema is already defined. It helps in quickly scaffolding model classes based on the database structure without the need to start from scratch.