... Navathe,Conceptual Database Design,Benjamin/Cummings,1992.[2]Cattell R.,The Object Database Standard: ODMG-99 Release1.2, Morgan-Kaufmann,1992.[3]Fong J., B. Siu,Multimedia, Knowledge-Base and Object-Oriented ... HU'O'NGDOlTU"O'NGHoANG QUANGAbstract.Entities represent classes of real-world objects. As a result, problem of converting Entity-Rela-tionship Model into Object-Oriented Model is taken shape ... tinh)Ngu hai t~p thu'c th~ A va B c6 mdi quan h~ R (R khOng c6 thuoc tinh], thl m~i lap A va B, ngoai cac thuoc tinh trong t~p thtrc th~Ava B, se diroc b5 sung thuoc tinhR[goi la thuoc...