A category based theoretic approach for viewpoint integration

According to the relations among viewpoints and the basic principle of viewpoint integration in viewpoints-oriented requirements engineering, the definition of viewpoint category is presented formally, denoted by V _p C A T. On the basis of concepts and theories of category theory, some properties are discussed in the process of viewpoints integration, such as cocone, co-equalizer, co-limit and so on. And we also present a case study to illustrate a practical application in the process of viewpoints integration. At last, we discuss our future works.