Abstract: MANETs are very popular because of its infrastructure less network. These mobile nodes serve as both hosts and routers so they can forward packets on behalf of each other. It has restricted computing resources and due to mobility of node there is much change in network topology. These restrictions raise several new challenges for data access applications with the respects of data availability and access delay. This result in lower data availability in mobile ad-hoc networks than in wired networks. One probable solution to avoid this problem is to take up replication techniques which increases data availability and decrease query response delay.