>If you have ONE parent and ONE child, you should just combine the data into a single cursor; you don't need multiband. The multiband functionality is for the case that you have several children, each with potentially several records.

In this example I use one parent and one child table because I want to ilustrate the problem only. But in my real application I have 44 tables relatad tables.

If anyone solution this problem to one parent and one child table a believe that I can solution the same problem in my application with 44 tables.