Hi,

I saw in the book. it said that usually we make a data object for each table in the database. But I do not know how to join these object. Such as, I have a data object for Order Table, one for OrderDetail table, one for Product table and an other one for Customer Table. But I do not know how use these together to create a order form. Because in this context these objects are related each other. In this case I do not know should I biuld one Data object Order that include all of them (OrderID, Customer, Orderdetail, products...) or just build seperate data objects as above and use a Business object to link them together?but how to? Are there anybody know about this? Could you please show me in this case?

Thanks in advance,

Trung Luu