International Journal of Engineering Science and Technology (IJEST)
Replication is an area of interest to both distributed database and real time databases systems. In this paper, the authors 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. The authors discuss a framework to design a replicated real-time database and maintain all timing constrains.