Extensible Digital Library Service Platform

In this chapter, we describe X-system, a general digital library platform which is capable of handling large-scale digital contents with flexible, extensible management features. The development of X-system achieves several important goals of modern digital library systems, including a fully functional system, neutral and portable architecture, stackable modules, data exchange, and universal access. The model and architecture are discussed in this chapter. Moreover, several extension case studies of X-system are demonstrated to show the extensibility of our system. In addition, to act as a basic digital archive/library system, the X-system has been adopted as various different usages, including e-learning platform, knowledge management platform, and library circulation system.