Tables VBAK and VBAP

Hi there!

When i want to extract data ,partly related to header and partly related to item , what i do is, i give the conditions(header conditions like sales org.) for which i need data in VBAK and when i get the sales order numbers i exceute VBAP for these sales order to get item data....is this the correct way or is there a way to get the header as well as item data from the same table....Please suggest....