Code Generator Tools (edit)
ASP.NET Core Application to Existing Database (Database First)
https://ef.readthedocs.io/en/staging/platforms/aspnetcore/existing-db.html
Build an ASP.NET Core API Using the Existing Database
https://www.c-sharpcorner.com/article/build-asp-net-core-api-using-existing-database/
Scaffolding an Application From Existing Database with EF Core on ASP.NET Core
https://owlypixel.com/scaffolding-application-existing-database-ef-core-asp-net-core/
Getting Started with Entity Framework Core: Database-First Development
https://www.codeproject.com/Articles/1209903/Getting-Started-with-Entity-Framework-Core-Databas
Can we Scaffold DbContext from selected tables of an existing database
Tutorial: Get started with EF Database First using MVC 5
ASP.NET Core WebApi Sample