A Web Service-Oriented Architecture for Implementing Web Information Systems

Web services are one of the most popular ways for building distributed Web Information Systems (WIS). In this paper we propose a distributed implementation of the Hera methodology, a methodology based on models that specify the different aspects of a WIS. The Web services used in the implementation are responsible for capturing the required data transformations built around specific Hera models. A service orchestrator coordinates the different Web services so that the required WIS presentation is built. Based on the degree of support of the user interaction with the system two architectures are identified: one for the construction of static applications, and another one for the building of dynamic applications.