HiCoMo: High commit mobile transactions

Minsoo Lee, Sumi Helal

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


We introduce a new mobile transaction model applicable to decisionmaking applications over aggregate data warehoused on mobile hosts. The model allows the aggregate data to be updated in disconnection mode, while guaranteeing a very high rate of commitment on reconnection. We name such transactions High Commit Mobile Transactions, or HiCoMo. At reconnectiontime, HiCoMo's are analyzed and several base (fixed network) transactions are generated in order to bring the same effect upon the base tables from which the aggregates are derived. In this paper, we provide a formal definition for the concepts related to HiCoMo's, and a transformation algorithm that is used to analyze them and generate base transactions. We provide a simple example scenario to demonstrate the usefulness of this transaction model. Finally, we compare the commit behavior of HiCoMo's to that of the two-tier model using simulation and a mobile transaction benchmark drawn from an inventory application domain.

Original languageEnglish
Pages (from-to)73-92
Number of pages20
JournalDistributed and Parallel Databases
Issue number1
StatePublished - Jan 2002


  • Disconnected operation
  • Mobile transactions
  • Transaction models
  • Two-tier replication


Dive into the research topics of 'HiCoMo: High commit mobile transactions'. Together they form a unique fingerprint.

Cite this