Service Oriented Layered Approach for E-Governance System Implementation

Service Oriented design and software development has gained much importance in the area of e-Governance applications. The main focus is to design and implement web services for efficient realisation of service interoperability and reuse. In this paper, we have proposed a layered service oriented design approach with government department wise abstraction levels for uniform service specification and composition mechanism. For our case study we have considered seven web services of different departments, which are interdependent. The service identification, service composition and service interaction pattern of all these services are done as per the principles of service oriented design. A generalised framework is also proposed to develop any complex web service, which can use and reuse services of multiple departments seamlessly. It provides flexible and dependable solution for developing agile e-Governance applications as the complexity of web services increases.