ABSTRACT

Mobile Computing Environment poses its unique challenges to the existing Transaction models which are fail to solve. The main challenges of mobile computing environment are its heterogeneous environment, low bandwidth and power resources. The transaction must be able to handle frequent disconnection because mobile user can move anywhere. In this paper, I presented a transaction model for mobile adhoc network environment. In this hierarchical model transaction is performed in distributed fashion by the nodes in a MANET. Basically three types of nodes in this transaction model-Captain, Player and Data Manager. Data manager is maintained into hierarchy-Global, Zonal and Local. Players play the role under the supervision of Captain. Mobile Nodes can access data directly with Local data Manager. The data manager is used maintaining the data and log for recovery. In the previous model for transaction there is no criterion for recovery, in this model I resolve this problem with hierarchical structure of data manager.