Systems integration aims to provide a homogenous view to a system consisting of many heterogeneous systems. Systems integration can be achieved by many means out of which the middleware approach is the most popular. This is because middleware can be built around existing systems thereby reducing the amount of changes needed for the integration. Nowadays many middleware technologies are available to integrate heterogeneous systems. One can chose among them depending upon the requirements. But due to the many technologies available for Middleware, a muddle of middleware exists. To reduce this muddle and to integrate the systems already implemented using different middleware technologies, Web Services plays a key role. Web Services is an XML-based technology which uses known protocols to communicate between applications, thus making them platform and technology independent.

Digital Library Service Integration (DLSJ) provides a systematic approach in integrating the digital library collections and services. Amazon's website www.amazon.com is integrated with DLSI such that users see the same web pages as they see when they are logged in normally, but these pages will be augmented with link anchors. Wrappers will parse the web pages to look for elements of interests like book title, author name, etc., and provide them with link anchors which will connect the user to the library at New Jersey Institute of Technology where he or she can search for books or request them through interlibrary loan. The thesis proposes a new architecture for the DLSI as a web service, which can provide this functionality.