NDLI: Distributed View Divergence Control of Data Freshness in Replicated Database Systems

Content Provider	IEEE Xplore Digital Library
Author	Yamashita, T.
Copyright Year	1989
Abstract	In this paper, we propose a distributed method to control the view divergence of data freshness for clients in replicated database systems whose facilitating or administrative roles are equal. Our method provides data with statistically defined freshness to clients when updates are initially accepted by any of the replicas, and then, asynchronously propagated among the replicas that are connected in a tree structure. To provide data with freshness specified by clients, our method selects multiple replicas using a distributed algorithm so that they statistically receive all updates issued up to a specified time before the present time. We evaluated by simulation the distributed algorithm to select replicas for the view divergence control in terms of controlled data freshness, time, message, and computation complexity. The simulation showed that our method achieves more than 36.9 percent improvement in data freshness compared with epidemic-style update propagation.
Sponsorship	IEEE IEEE Comput. Soc. Tech. Committee on Data Eng IEEE Computer Society
Starting Page	1403
Ending Page	1417
Page Count	15
File Size	2331078
File Format	PDF
ISSN	10414347
Volume Number	21
Issue Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Distributed control Control systems Database systems Distributed algorithms Scalability Computational modeling Data processing Large-scale systems Peer to peer computing Centralized control asynchronous update. Data replication weak consistency freshness delay Data sharing Information Search and Retrieval Information Storage and Retrieval Information Technology and Systems Distributed databases Distributed systems
Content Type	Text
Resource Type	Article
Subject	Information Systems Computational Theory and Mathematics Computer Science Applications

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