In tangent with the following TechNet article learn the basics for transitioning from working with conventional data provided to interact with SQL-Server data to working with Entity Framework Core 3.x. Keep in mind what is being presented is basic code which will progress into more indepth examples to follow in another article linked to this article.
A future article will take the existing database and farther split out several tables, rename several tables and fix a indexing issue. Although presenting the article has not been written while the code has been and resides here.