1. You don't have to relate tables.

2. If you can manage all tables within one dataset, there is no need to create multile dataset as there is no benefit I see.

3. You will have to call ParentTable.GetChildRows() method to get the collection of child rows.

>HI,
>I have some questions concerning the datasets usage:
>
>1- Does the tables added to a dataset MUST be related or can I add as many (reasonably) as I want without necessarely relate them?
>
>2- Is there any advantages in using more than one dataset for one connection? I mean, if I can add my tables in a single dataset, what would be the advantage in using more that one dataset?
>
>3- I have a Parent that is related to one of its child, will the child table be filtered automatically on the parent table row?
>
>Thank you for your help,
>Christian