Digital documents are widely spread around the web in information systems of all kinds. The approach described in this paper is to unify the access to documents and connect applications to share, search and publish documents in a standardised way. The sample implementation uses web services to integrate knowledge management, a learning management system, and a digital library. We propose a procedure to access resources in heterogenous repositories by negotiating capabilities before sending queries. The result is a unified service model for accessing resources, which can easily be supported by different repositories and clients.
A layered model is a solution to the problem of two disjunct points of view on the same problem. One group has a technical background but does not know much processes. The other group's members have a process perspective. This contribution introduces a meta-model consisting of three layers. The outer ones represent the disjunct points of view. The inner one contains elements of both other layers and combines them. It also contains a system-independent scripting language to automatically configure software systems.
Webservice-based architectures are facing new challenges in terms of convergence of systems. By example of a web service integration of a digital repository/library, systems of knowledge management in groups, and learning management systems this contribution shows new potentials of flexible, descriptive webservices. Digital libraries are understood in their key position as searching, structuring, and archiving instances of digital media and they actively provide services in this sense. The goal of this article is to introduce services suitable for everyday use for coupling different classes of systems. Conceptually, the requirements of a possible standard in the area of convergence of knowledge management, digital libraries, and learning management systems are discussed. The results are publish and search services with negotiation capabilities with a lowbarrier for adoption.
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