Research on dynamic programming model based on semantic

OGSA(Open Grid Services Architecture) is called the next generation grid architecture. We research the architecture of the Web Service, we also programm a grid service in the grid environment. On the point of component, this system is exactly a multiple component, it provide service to external in Web Service mode. With the growing number of Web services, it is necessary to compose existing Web services dynamically according to service request. Dynamic composition service method is proposed based on semantic, according to user demand real-time change, convenient user programming.