A survey of data replication techniques for mobile ad hoc network databases

Abstract

A mobile ad hoc network (MANET) is a network that allows mobile servers and clients to communicate in the absence of a fixed infrastructure. MANET is a fast growing area of research as it finds use in a variety of applications. In order to facilitate efficient data access and update, databases are deployed on MANETs. These databases that operate on MANETs are referred to as MANET databases. Since data availability in MANETs is affected by the mobility and power constraints of the servers and clients, data in MANETs are replicated. A number of data replication techniques have been proposed for MANET databases. This paper identifies issues involved in MANET data replication and attempts to classify existing MANET data replication techniques based on the issues they address. The attributes of the replication techniques are also tabulated to facilitate a feature comparison of the existing MANET data replication works. Parameters and performance metrics are also presented to measure the performance of MANET replication techniques. In addition, this paper also proposes criteria for selecting appropriate data replication techniques for various application requirements. Finally, the paper concludes with a discussion on future research directions.

Monitoring Selfish Nodes in MANET during Replica Allocation

“…Consequently, different fundamental technologies [5] from those of conventional fixed networks are needed. One whole network is divided into two or more networks due to the migrations of mobile hosts, [8] mobile hosts in one of the divided two networks cannot access data items held by mobile hosts in the other network.…”

OntoWiki Mobile – Knowledge Management in Your Pocket

“…Though, the topic of semantic data replication and conflict resolution in semantic data bases is not new, most of the existing approaches developed for desktop application rely heavily on client resources. On the other hand, topic of data replication in distributed databases on mobile devices is highlighted very thoroughly [6]. Semantic data replication for mobile devices adopts some of the approaches for generic mobile databases.…”

DYFRAM: dynamic fragmentation and replica management in distributed database systems

“…Among the decentralized systems, we find replication schemes for mobile ad hoc networks (see [23] for an overview). However, these approaches do not consider table fragmentation and in general do replication decisions on a more coarse granularity, e.g., files.…”