NDLI: Assurance allocation technology in distributed database systems by an autonomous mobile agent

Content Provider	IEEE Xplore Digital Library
Author	Perez Leguizamo, C. Mori, K.
Copyright Year	2002
Description	Author affiliation: Dept. of Comput. Sci., Tokyo Inst. of Technol., Japan (Perez Leguizamo, C.; Mori, K.)
Abstract	Recently with the advent of IT and the wide spread use of the Internet, new user oriented production and logistic systems, such as the supply chain management system, have been required in order to cope with the drastic and continuous changes on the markets and users' preferences. Therefore, heterogeneous database systems need to be integrated in a common environment which can cope effectively with the heterogeneous requirements of each company under an ever-evolving changing environment. That is assurance. Autonomous Decentralized Database System (ADDS) is proposed as a system architecture in order to realize assurance in distributed database systems. In this system architecture, a loosely-consistency management technology is proposed in order to maintain the consistency of the system, each database can update autonomously, and confer the real time property. A background coordination technology, performed by an autonomous mobile agent, is devised to adapt the system to evolving situations. The system can achieve real time by allocating the information in advance among the sites that has different time constraints for updating. Moreover, an assurance information allocation technology is proposed when considering that a failure in the background coordination mechanism may lead to loss of data and unavailability of the system. This mechanism, in which the mobile agent autonomously regulate its own capacity for allocating the information, is proposed based on the real-time property and system's availability considerations. The effectiveness of the proposed architecture and technologies are evaluated by simulation.
Sponsorship	IEEE Comput. Soc. China Railway Soc
Starting Page	61
Ending Page	68
File Size	535463
Page Count	8
File Format	PDF
ISBN	0780376242
DOI	10.1109/IWADS.2002.1194650
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-11-07
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Database systems Mobile agents Real time systems Internet Continuous production Production systems Logistics Supply chain management Technology management Time factors
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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