Spatial application integrating infrastructure

Abstract

A spatial application-integrating infrastructure (PAI) is presented. Many utilities can use PAI to integrate a variety of spatial database, systems and business processes. PAI consists of integrating bus, adapter services, metadata database, PAI mediator and PAI Toolkit. PAI Toolkit is composed of a series of API and web services. Integrating Bus is a group of domain-oriented encoding standards and communication protocols; Adapter Service encapsulations are recommended as a good solution to integrate existing applications or systems; metadata database is the key unit of "PAI", which manages all data and services and shields heterogeneity and distribution of spatial data and services; PAI mediator is positioned to manage metadata and update spatial data online; the terms used in metadata are defined in OWL; all data and protocols are encoded in XML; Web service can operate with each other using SOAP protocol. © Springer-Verlag Berlin Heidelberg 2004.