DISTRIBUTED REAL TIME REPLICATED DATABASE: Concept and Design

Replication is an area of interest to both Distributed Database and Real Time Databases Systems. In this paper, we provide an overview to compare replication techniques available for these database systems. The framework has been designed to emphasize the role played by different mechanisms and to facilitate comparisons. One of those issues is maintaining consistency between the actual state of the real-time object of the external environment and its images as reflected by all its replicas distributed over multiple nodes. We discuss a framework to design a replicated real-time database and maintain all timing constrains. In order to extend the idea for modeling a large scale database, we present a general outline that consider improving the scalability by using an existing static segmentation algorithm applied on the whole database, with the intent to lower the degree of replication, enables segments to have individual degrees of replication with the purpose of avoiding excessive resource usage, which all together contribute in solving the scalability problem for DRTDBS.