Dear All

As i am a beginner.
I want to make a Purchase order for a export import Application.
For Which

I have made a content type "Product Master" in which fields are:
Product code
Product Name
Product Category
Quantity per unit
unit price

and other content type is "purchase information" in which i want that, at same purchase_information_id , i want to add products information from "Product Master" Content type .

please give me direction that how i can do this.