A SOA-based system interface control for E-Government

In this paper, a SOA-based system approach is presented for system interface control in sustained systems. Once a system is completed developed, it goes into a sustained phase supported by many interfaces. As new technologies develop, updating and maintaining such systems require non-trivial efforts. A clear prerequisite before the deployment of a new system is to clarify the influence of changes on other systems connected through interfaces. However, as each sustained system manages its own information separately, integrating relevant information among the interfaced systems is a major hurdle to build SOA in E-Gov. Therefore, the XML technology is applied to support system interface control toward SOA using step-by-step approach in E-Government. In particular, I focus on messaging interface issues in Health Level Seven typically used in medical information system and propose SOA framework cube and a scheme to represent message information that can be used for the decision support of interface impact between sustained systems.