Entity Framework (EF) is a popular Object-Relational Mapper (ORM) for .NET applications, making it easier to interact with databases using .NET objects. Whether you’re using the modern Entity Framework Core or the classic Entity Framework 6 (EF6), setting up a database connection is a foundational step. This guide walks you through the process for both versions, ensuring you can get your application connected to a database quickly and securely. 1. Install Required NuGet Packages Before you start, ensure your project includes the necessary EF Core Packages. For SQL Server, you'll typically need:  Microsoft.EntityFrameworkCore Microsoft.EntityFrameworkCore.SqlServer You can install these via the NuGet Package Manager or using the Package Manager Console: 2. Add Your Connection String Store your database connection string in appsettings.json for easy management and security: 3. Configure Db Context First, we have to create a class inherited from DbContext and add constructor...