Authenticate Users Using my SQL Database

I want to apply authentication using Auth0 on my own Database which is designed in SQL Server, now the application scenario is Database created using SQL Server and web API developed using .Net web API 2 technology and front-end/ client side designed using angular 6. Is it possible to do this and whats steps i have to follow to achieve this.

A good starting point is our Docs and Quickstarts, as well as the info on custom databases