Study on the Service-Oriented Spatial Information Sharing Model

The core issue of digital city construction is spatial information sharing. This paper presents a new viewpoint that spatial information sharing has three factors which are subject, object and medium, and their forms and function transform when sharing model changed. It is showed that service-oriented spatial information sharing is the main pattern of digital city constructions today due to its many advantages. Based on the theory, the paper designs the framework and analyses its application.