Abstract: Object-oriented modeling provides a mechanism for representing information by using models organized around real-world objects and concepts. Basic construct of the mechanism is a object, which combines both the data structure and its behavior into a entity. The object has many characteristics, just like the unique identifier, generalization and inheritance, classification and aggregation. But these are not enough to modeling product. The data of product are produced gradually, so that you can not define the object completely. When the design process is ended, the product object is created. In order to cope with this problem, the paper expands the definition of object, partitions the object into dynamic models according to the evolution of object. It also presents the object views of dynamic model to describe the static characteristics of dynamic model of object. Based on the two concepts, the paper discusses the application in product modeling.

Key words: object-oriented modeling, object dynamic model, object view, product modeling