Why net framework is required for SQL server?

The .NET Framework is required for SQL Server primarily because it provides a managed runtime environment that allows SQL Server to execute applications and scripts written in .NET languages, such as C# and VB.NET. This integration enables features like SQL Server CLR (Common Language Runtime) integration, allowing developers to create stored procedures, triggers, and user-defined functions using .NET languages. Additionally, the .NET Framework supports various data access technologies, making it easier to interact with SQL Server from applications. Without it, many advanced functionalities and integrations would be limited or unavailable.