Title: Extended object oriented model to design relational databases (abstract)
Abstract: The recent trend in designing relational databases systems has been toward using object oriented model in high level. The next step is to convert the high level model into the relational diagrams from which relational are extracted. Finally the relations are examined to make it sure that they are fully normalized. In the current Object Oriented model a number of important concepts of the relational data bases such as generalization, subset hierarchy, the relation of a record type to itself..etc either can not be represented or it hard to represent them. In this presentation the object oriented model is extended to have a better representation of the concepts such as optional or mandatory relationship, aggregation objects, association objects, generalization, subset hierarchy and others.