Distributed Data Management System for the needs of distributed internet- based performance-centered enviroment for learning and development

Abstract

This paper presents the design of Distributed Data Management System (DDMS) for the needs of Distributed Internet-based Performance-centred Environment for Learning and Development (DIPELD) which applies the model of Internet based performance support systems with educational elements (IPSS_EE). DDMS facilitates the cooperation among educational resources and systems which are located in different geographical locations in different local servers. The main purpose of the work presented is to define the structure and model of DDMS as well the technologies needed inside for the practical implementation of DDMS. The system is based on Communication Server implementing distributed database storage system that provides data and file replication in an environment of high data mobility and heterogeneous host capabilities. In this paper we also propose a new method for data base merge replication between server nodes over the Internet by implementing a software module called DDMS.