Assignment for Telecommunication System
Data replication for mobile computers
With the tremendous growth of the portable computing devices and wireless
communication, the mobile computing has become extremely popular. The
wireless enabled portable computing devices with massive storage capacity and
high-end processing capabilities have started to make the extensive use of mobile
databases already. The rising popularity in these computing paradigms demands
that the mobile computing be reliable enough to ensure the continuous data
availability and integrity. However mobility comes at the cost of bandwidth, limited
power, security and interference. In modern mobile computing systems data
replication has been adopted as an efficient means to ensure the data availability
and integrity as well as an effective means to achieve the fault tolerance. Data
replication not only ensure the availability of the data but also reduce the
communication cost, increase data sharing and increase the safety of the critical
data. Furthermore, it also determine when and where (location) to place the replica
of data, controlling the number of data replicas over a network for efficient
utilisation of the network resources.
