Data Consistency in Intermittently Connected Distributed Systems

DMCA

Data Consistency in Intermittently Connected Distributed Systems (1997)

Cached

Download Links

Other Repositories/Bibliography

DBLP

by Evaggelia Pitoura , Bharat Bhargava , Ouri Wolfson

Venue:	IEEE Transactions on Knowledge and Data Engineering
Citations:	47 - 2 self

BibTeX

@ARTICLE{Pitoura97dataconsistency,
    author = {Evaggelia Pitoura and Bharat Bhargava and Ouri Wolfson},
    title = {Data Consistency in Intermittently Connected Distributed Systems},
    journal = {IEEE Transactions on Knowledge and Data Engineering},
    year = {1997},
    volume = {11},
    pages = {896--915}
}

OpenURL

Abstract

Mobile computing introduces a new form of distributed computation in which communication is most often intermittent, low-bandwidth, or expensive, thus providing only weak connectivity. In this paper, we present a replication schema tailored for such environments, that seeks to adapt consistency guarantees to networking conditions. Bounded inconsistency is defined by allowing controlled deviation among copies located at weakly connected sites. The database interface is extended with weak operations that permit access to local, potentially inconsistent copies and make conditional updates. The usual operations, called strict in this framework, are also supported. They offer access to consistent data and perform permanent updates. The proposed model provides for disconnected operation, since mobile clients can operate even when disconnected by using weak operations. A balanced use of weak and strict transactions can efficiently reduce network usage and latency. Adjusting the degree of dive...

Keyphrases

intermittently connected distributed system data consistency weak operation disconnected operation mobile client weak connectivity replication schema proposed model inconsistent copy consistency guarantee networking condition bounded inconsistency network usage conditional update permanent update strict transaction usual operation new form balanced use distributed computation database interface

DMCA