A service dependency model for multiple service version synchronization

As Web Services are used more frequently, their evolutionary changes become an increasingly prominent issue. Specifically, one challenge involving service maintenance entails identifying changes and synchronizing those changes with the dependent services. For instance, a service provider may support multiple versions of the same service, and these versions are dependent on common artifacts such as data types, operation functions, and security policies. Consequently, it is necessary to develop automatic or semi-automatic service version synchronization techniques in order to reduce the burden involved in the manual creation and maintenance of services. In this paper, we present a service dependency model for the synchronization of multiple service versions by relating the base service model with the dependent service versions to construct a service dependency graph and dependency matrices. Additionally, we analyze service changes on the dependency matrices and perform synchronization based on the indicated change dependency. Finally, the related synchronization process and architecture are also introduced.