Agent Mobile Transaction Model
Keywords:
Concurrency control, mobile database, transaction, shadow paging, nested transaction, saga, caching, group transaction, Vital subtransaction, cloud computing.Abstract
Transaction is an important concept in the
database systems, it moves the database from consistent state to a new consistent state, so that users trust the information retrieved from information systems. A mobile user usually works offline, when connecting to the system, he needs to synchronize his work with the primary database server and updates his local copy, but database may be changed while he is
working offline. In this paper we introduce the M-Shadow-Agent model which is a modification of the
M-Shadow technique to avoid mobile disconnection problems and handling data changing problem while the mobile user is disconnected or working offline, by using the actionability and the business rules. It increases the transaction success probability, and reserves database consistency. In this paper, the solution concerns on avoiding disconnection, and transaction is not divisible and transaction is one compound transaction only.
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