?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Nguyen%2C+Van+Vy&rft.aulast=Nguyen&rft.aufirst=Van+Vy&rft.date=2003&rft.title=A+Design+Pattern+of+the+Layer+Interacting+with+Relational+Databases+in+Object-Oriented+Systems&rft.genre=proceeding