source - https://docs.microsoft.com/pl-pl/ef/core/managing-schemas/migrations/index
If any trouble with powershell (if needed upgrade)
with tutorial: https://docs.microsoft.com/pl-pl/aspnet/core/tutorials/razor-pages/model?view=aspnetcore-2.2&tabs=visual-studio
Commands in PMC does not work
Add-Migration Initial
Update-Database
Use CMD.exe
C:\Users\User_name\source\repos\RazorPagesMovie\RazorPagesMovie>dotnet ef migrations add init
*init: if you use command for the 2nd time name init2, init3...initN
C:\Users\User_name\source\repos\RazorPagesMovie\RazorPagesMovie>dotnet ef database update