Changing Trends in Replicated Database Systems

Today, we are facing the problem of easily, effectively and efficiently handling very huge amount of sensitive data in order to do our daily routine work without any interruption or failure. Simply, we wants that data should be available to the user whenever it is required at any cost .The concept of replication came into existence just because of two facts that are availability and performance. Replication is used in both the fields, centralized databases and distributed databases. Replication (Database Replication) basically improves the availability of data by storing multiple copies of data at some other locations. These multiple copies of data are called replicas. It also improves performance by increasing throughput, by providing access to the data simultaneously to multiple computers (users) with the help of replicas and by facilitating the users to access nearby replicas unless and until there is some issue with it.