FAQ: Entity Framework Core

Intermediate Updated May 20, 2025

🧠 FAQ: Entity Framework Core

❓ What is the difference between EF Core and EF6?

EF Core is a lightweight, cross-platform rewrite of Entity Framework 6. It has better performance, LINQ support, and a more modern architecture, but some advanced EF6 features may still be missing or behave differently.

❓ Can I use EF Core with NoSQL databases?

EF Core is designed for relational databases. However, some providers exist for non-relational sources, but they are not officially supported or as mature.

❓ How do I seed initial data in EF Core?

You can use HasData() in OnModelCreating:

modelBuilder.Entity<Product>().HasData(
    new Product { ProductId = 1, Name = "Laptop", Price = 999.99M }
);

Then run a migration and update the database.

### ❓ Is EF Core production-ready?
Yes, EF Core is stable and production-ready. Microsoft uses it internally and actively maintains it. Always test thoroughly and apply best practices.

### ❓ How do I handle relationships in EF Core?
EF Core supports one-to-one, one-to-many, and many-to-many relationships using navigation properties and configuration via conventions or Fluent API.

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## ✅ Conclusion

Entity Framework Core offers a powerful, intuitive way to work with databases using .NET. From rapid prototyping to large-scale enterprise apps, EF Core helps you stay productive and cleanly separate data access logic from business rules. 

Start small, explore advanced features as needed, and follow best practices — and you'll unlock the full potential of this robust ORM in your .NET applications.