Best Practice of creating invoice In SSRS

I looked for hours for the best way to create an invoice order report in SSRS, but no luck.

To illustarte my scenario, I have three tables:

Table Order with fields: OrderID and OrderDate

Table ProductOrder with fields:ProductOrderID,  OrderID Product Id, Price

Table SalesmanOrder with fields:  SalesmanOrderID, OrderID, Salesman ID, Commission

the Order table is the Parent table of the ProductOrder and SalesmanOrder tables

I'm trying to display the orderID and Order Date plus Product detail and Salesman commission details related the selected order.

Is it wise to create one dataset joining all the three tables or one dataset for each one of them?

Thanks,

Rachida

Rachida Dukes