I need a way to add existing tables to models and a simple method to connect, update, and alter tables. Any straightforward approach?
A simple CLI command generates C# models from tables in EF Core.
https://learn.microsoft.com/en-us/ef/core/managing-schemas/scaffolding/?tabs=dotnet-core-cli
Likewise, scaffolding Web API controllers can be done with a CLI command or in Visual Studio.