Research on Dynamic Programming Model Based on Keywords under the Grid Environment

This article conducts a research on OGSA(Open Grid Services Architecture) and programming under the grid environment, i.e., encapsulating the traditional distributed software resources under the grid environment using web service, encapsulating the service provided by isomerous software resources as web service, and encapsulating the components providing web service as a new service. In view of components, this system is actually a composite component, which provides service in the manner of web service. With the rapid increase of service number under the grid environment, how to automatically perform dynamic combinations of services according to the service request becomes a problem urgently to be solved. This article analyzes the characteristics of the original web service combination, and proposes a dynamic programming model based on key words matching, which makes it easier for users to program upon the real-time change of users´ requirement.