To understand what you are looking for, you need a history lesson.

If you want, I can:

In 2010, the landscape for database development looked drastically different than it does today:

Maya found the official download page: Microsoft SQL Server Data Tools – June 2010 (version 10.3.20506.0). She also noticed a warning: This version is deprecated and only supported for legacy projects. For new development, use SSDT for Visual Studio 2019 or 2022.

Users are encouraged to use modern versions like SSDT for Visual Studio 2022 or 2026 , which are backward compatible and can still target older SQL Server instances (starting from SQL Server 2005).