model.cs

modelBuilder.Entity<AppearanceConfiguration>()
                .OwnsOne(ac => ac.DefaultAppearance, dao =>
                {
                    dao.ToTable("Appearances", SchemaName);

                    dao.OwnsMany(a => a.Components, ao =>
                    {
                        ao.ToTable("AppearanceComponents", SchemaName);

                        ao.OwnsOne(c => c.BaseColour, od => od.ToTable("BaseColours", SchemaName));
                        ao.OwnsOne(c => c.PatternColour, od => od.ToTable("PatternColours", SchemaName));

                        ao.Property<long>("ID");
                        ao.HasKey("ID");
                    });

                    dao.HasForeignKey("AppearanceConfigurationID");
                    dao.Property<long>("ID");
                    dao.HasKey("AppearanceConfigurationID", "ID");
                })
                .OwnsOne(ac => ac.CurrentAppearance, cao =>
                {
                    cao.ToTable("Appearances", SchemaName);

                    cao.OwnsMany(a => a.Components, ao =>
                    {
                        ao.ToTable("AppearanceComponents", SchemaName);

                        ao.OwnsOne(c => c.BaseColour, od => od.ToTable("BaseColours", SchemaName));
                        ao.OwnsOne(c => c.PatternColour, od => od.ToTable("PatternColours", SchemaName));

                        ao.Property<long>("ID");
                        ao.HasKey("ID");
                    });

                    cao.HasForeignKey("AppearanceConfigurationID");
                    cao.Property<long>("ID");
                    cao.HasKey("AppearanceConfigurationID", "ID");
                });