using (var ctx = new DB1Entities())
            {
                var o = ctx.Orders.First();

                var od = o.Details.First();
                o.Details.Remove(od);
                ctx.OrderDetails.Remove(od);

                od = o.Details.First();
                od.Quantity = 7;

                DumpEntity(ctx);

                ctx.SaveChanges();
            }

System.Data.Entity.DynamicProxies.OrderDetail_B5EF51... - Modified
System.Data.Entity.DynamicProxies.OrderDetail_B5EF51... - Deleted
System.Data.Entity.DynamicProxies.Order_DFFC55BA5F8C... - Unchanged

exec sp_executesql N'update [dbo].[ORDER_DETAIL]
set [QUANTITY] = @0
where (([ID_ORDER_DETAIL] = @1) and ([VERSION] = @2))
select [VERSION]
from [dbo].[ORDER_DETAIL]
where @@ROWCOUNT > 0 and [ID_ORDER_DETAIL] = @1',N'@0 int,@1 int,@2 binary(8)',@0=7,@1=2,@2=0x00000000000007D7


exec sp_executesql N'delete [dbo].[ORDER_DETAIL]
where (([ID_ORDER_DETAIL] = @0) and ([VERSION] = @1))',N'@0 int,@1 binary(8)',@0=1,@1=0x00000000000007D6

            using (var ctx = new DB1Entities())
            {
                var o = ctx.Orders.First();

                var od = o.Details.First();
                o.Details.Remove(od);
                ctx.OrderDetails.Remove(od);

                od = o.Details.First();
                od.Quantity = 7;

             ctx.Entry(o).State = System.Data.EntityState.Modified;

                DumpEntity(ctx);

                ctx.SaveChanges();
            }

System.Data.Entity.DynamicProxies.OrderDetail_B5EF51... - Modified
System.Data.Entity.DynamicProxies.Order_DFFC55BA5F8C... - Modified
System.Data.Entity.DynamicProxies.OrderDetail_B5EF51... - Deleted

exec sp_executesql N'update [dbo].[ORDER]
set [ID_CUSTOMER] = @0, [ORDER_DATE] = @1, [SHIPMENT_COUNTRY] = @2, [SHIPMENT_CITY] = @3, [SHIPMENT_STREET] = @4, [SHIPMENT_BUILDING] = @5
where (([ID_ORDER] = @6) and ([VERSION] = @7))
select [VERSION]
from [dbo].[ORDER]
where @@ROWCOUNT > 0 and [ID_ORDER] = @6',N'@0 int,@1 datetime2(7),@2 nvarchar(50),@3 nvarchar(50),@4 nvarchar(50),@5 nvarchar(10),@6 int,@7 binary(8)',@0=1,@1='2013-01-13 22:54:55.2470000',@2=N'fqwef',@3=N'qwefqwef',@4=N'123r123r',@5=N'wefwef',@6=2,@7=0x00000000000007D8

exec sp_executesql N'update [dbo].[ORDER_DETAIL]
set [QUANTITY] = @0
where (([ID_ORDER_DETAIL] = @1) and ([VERSION] = @2))
select [VERSION]
from [dbo].[ORDER_DETAIL]
where @@ROWCOUNT > 0 and [ID_ORDER_DETAIL] = @1',N'@0 int,@1 int,@2 binary(8)',@0=7,@1=4,@2=0x00000000000007DA

exec sp_executesql N'delete [dbo].[ORDER_DETAIL]
where (([ID_ORDER_DETAIL] = @0) and ([VERSION] = @1))',N'@0 int,@1 binary(8)',@0=3,@1=0x00000000000007D9