Fluent Api Entity Framework core

Question

A user can have 1 or 0 account

public class User
    {
        public int UserId { get; set; }
        public string Name { get; set; }
        public string         


        

Answer 1

Pretty much the same, with other names.

modelBuilder.Entity()
    .HasOne(s => s.Account) 
    .WithOne(ad => ad.User)
    .IsRequired(false);