hello i just start using application builder in oracle 10g and now i'm stuck with master-detail foreign key problem...

in chapter 2 we create master-detail for order - order item and all column for master and detail are selected to be displayed.... after finished all this master -detail form... i got a different result..

when i click edit for order... the order item show the order_id but in the book not showing any order_id...
then when i click create.... in the book only have 3 textfield(product_id, unit price, quantity) but my result show 4 textfield(order_id, product_id, unit price, quantity)...

if i'm not include order_items.order_id as displayed column then everything will look same but if i'm inserting new record.... the order_id will be null...

what should i do to make it work properly??

THANKS IN ADVANCE...