The presentation of the similarities and differences between relational modeling of data and the object oriented modeling of data is of great importance both for data base designers and for users. By being well acquainted with the relational model and by noting the similarities and differences...

The author uses a comparative presentation of Relational Database Management Systems (RDMS) and Object Oriental Database Management Systems (OODBMS). The presentation of the two types of systems was made having in view: The evaluation rules of the two types of systems elaborated by E.F. Codd and...