The Research Which Transforms The Traditional E-R Model To The Object-oriented Data Model

The object-oriented data model ,the combination of object-oriented thinking and database technology, resolved the problems encountered in traditional information projects in a natural manner,as a theory, object-oriented approach has been applied to many projects design. Therefore it not only has the object to be possible to turn round with, the wrong opportunity reduces, the maintenance convenience and so on the object-oriented characteristic, moreover the object-oriented data model already may take has nothing to do with the conceptual model with the platform to carry on abstractly to the real world, also may take and the platform related logic model carries on the system design. As one kind the data model which develops,the object-oriented data model on the one hand the very good solution software engineering present appeared question, on the other hand has finished the preparation for the future information technology which connects rails, obviously the object-oriented data model has become in the software engineering discipline an important branch.This article systematically elaborated the object-oriented method theory and the data bank technology development, comprehensively introduced object,class, inherits, the object contains, the Associations and so on the important concept, studies the traditional E-R model and the object-oriented data model development emphatically, thoroughly discussed the traditional E-R model and the object-oriented data model similarities and differences, further proposed one transformation method of traditional E-R model to the object-oriented data model and the realization of the object-oriented data model in object relational database.At the same time, the application this article research results will insure the information management system the E-R model to transform for the object-oriented data model and realize in the ORACLE object relational database, thus guaranteed SI-MIS the promotion transformation to provide the method and the realization basis and the support, after the transformation system in the reusability, the extension, stability software quality aspect and so on the maintenance had the remarkable enhancement, had achieved the software transformed the goal which promoted.