Code First

Code First is a development approach, primarily associated with Entity Framework in .NET, where developers define their data model using code (typically C# classes) rather than starting with a database schema. The framework then automatically generates or updates the database based on these code definitions, enabling a more object-oriented and agile workflow. It emphasizes writing business logic first and letting the tool handle database creation and migrations.

Also known as: Code-First, CodeFirst, EF Code First, Entity Framework Code First, Database First alternative

Why learn Code First?

Developers should use Code First when building applications where the domain model is central and they want to avoid manual database scripting, especially in agile environments with frequent schema changes. It's ideal for projects using Object-Relational Mapping (ORM) tools like Entity Framework, as it simplifies database management, supports version control for data models, and reduces the risk of mismatches between code and database. Use cases include rapid prototyping, greenfield development, and scenarios where database administrators are not heavily involved.

Learning Resources

• docs: Entity Framework Core - Code First
• tutorial: Code First Approach in Entity Framework Tutorial
• video: Entity Framework Core in .NET 8 - Full Course
• book: Programming Entity Framework: Code First