A Progressive Reprocessing Transaction Model for Updating Spatial Data in Mobile Computing Environments

Mobile transactions for updating spatial data are long-lived transactions that update local copies of the mobile platforms on disconnection. Since a mobile transaction is physically separated from its global transaction, the concurrent updates of mobile transactions should be merged into the global database after committing. Validation-based schemes, which are well-known to be appropriate for mobile transactions, have the overhead of aborting long duration transactions that conflict with some transactions. It is definitely unacceptable to cancel all the updates of a long-lived transaction due to conflicts with just a few objects. This paper introduces a novel reprocessing-transaction model that handles update conflicts between mobile transactions without aborting. Instead of aborting mobile transactions that conflict with committed transactions, the proposed model executes a new subtransaction called a reprocessing transaction, which reexecutes exactly the conflicted operations o...

• Type: Conference
• Year: 2004
• Where: W2GIS
• Authors: Donghyun Kim, Bonghee Hong
• Keywords: Conflicted Objects, Internet Technology, Long-lived Transaction, Mobile Transactions, W2GIS 2004