Mobile nested transactions for nomadic teams

This paper introduces the Mobile Nested Transactions (MNT) model for transaction processing coordination in groups of mobile devices. The model extends traditional approaches—centralized and distributed—for distributed transaction processing over mobile devices. Under the Nested Transactions approach, sub-transactions—logical work units—processing control is highly flexible and fault-tolerant. Hence, transaction processing with mobile groups lacking of access to a wired network or the Internet becomes possible. A MNT additional advantage is that sub-transactions could be distributed among mobile devices. This is, whenever some sub-transactions are successfully committed, they cannot be affected by failed or pending sub-transactions. q 2003 Elsevier Ltd. All rights reserved.