A proactive approach for mobile GIS

One of the major obstacles to the development mobile GIS is immaturity in database design. For this consideration, a new mobile data model is proposed based on a mobile view of a spatio-temporal and attribute model. A temporal database is designed in physicality for the implementation on the conceptual model. It is a proactive approach, continuously updating the related spatio-temporal and attribute data according to the real location of the subscriber and the current time. Finally, the performance of the dynamic database is evaluated for wireless GIS Web and on-line query applications. The design of this study increases the availability of GIS to mobile services by fine-tuning the existing database providing the latest accurate information to subscribers in a limited communication bandwidth; the response time is improved.