Index Based Ordered Broadcast with Status (IOBS) Algorithm for Consistent Data Broadcast

Mobile computing system is more popular as people need data on move. Many emerging mobile database applications demand broadcast based data dissemination, ie, the data broadcasted to more number of clients without any request. In this paper we address the problem of preserving data consistency and currency among mobile transactions, while the broadcast and update transactions executed concurrently on server without any control. We propose an efficient serializability based algorithm (IOBS) for ensuring the consistency of entire database. This algorithm has the following properties. The order of update transactions seen by the different mobile clients will be same. Consistency and currency are ensured without contacting the server. The size of control information for conflict checking is smaller.