In this project, the researchers are going to investigate a new approach to transaction processing for the asymmetric broadcast mobile environments. In broadcast environments, there is limited bandwidth of the upstream communication channel from the mobile clients to the server while the server has a relatively high broadcast bandwidth capability. This asymmetric characteristic prohibits the application of conventional concurrency control protocols, which normally require bi-directional communications between the mobile clients and the server. To address these issues, the researcher will devise new transaction processing mechanisms to minimize the use of limited upstream communication channels, to use effectively the limited capacity of mobile clients for transaction execution, and to allow maximum autonomy between the mobile clients and the server. The autonomy feature, which is critical to the scalability of applications such as mobile stock trading, is desirable for the large number of mobile clients in broadcast environments.