This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Can we assume the relationship b/w bid and BidRequest as Composition sincce bid does not have the existance with out the BidRequest.
Also can the same rule applicable purchaseOrder and Bid since PO can not stay with out BID.