Integration of Medical Information Systems Based on Virtual Database and Web Services

In the healthcare domain, there exists a large number of heterogeneous medical information systems on account of the complexity of the medical environment. To support easier information exchange between these systems, it becomes essential to integrate separated medical information and allow it to be exchanged and retrieved through Internet. In this paper, on data layer, via XML Schema mapping we build a virtual database for medical data sharing, which implements to update, insert and delete sharing medical data based on querying by XQuery; On application layer, we build web-based application integration, which allows medical information systems uniformly exchange information easily by Web Services.